Optical imaging system

ABSTRACT

An optical imaging system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens sequentially disposed in numerical order along an optical axis of the optical imaging system from an object side of the optical imaging system toward an imaging plane of the optical imaging system, wherein the first to seventh lenses are spaced apart from each other along the optical axis, and the optical imaging system satisfies 0.1&lt;L 1   w /L 7   w &lt;0.4, where L 1   w  is a weight of the first lens, L 7   w  is a weight of the seventh lens, and L 1   w  and L 7   w  are expressed in a same unit of measurement.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of application Ser. No. 16/424,540filed on May 29, 2019, and claims the benefit under 35 USC 119(a) ofKorean Patent Application Nos. 10-2018-0061412 filed on May 29, 2018,and 10-2018-0106169 filed on Sep. 5, 2018, in the Korean IntellectualProperty Office, the entire disclosures of which are incorporated hereinby reference for all purposes.

BACKGROUND 1. Field

This application relates to an optical imaging system.

2. Description of Related Art

Recently, mobile communications terminals have been provided with cameramodules, enabling video calling and image capturing. In addition, asutilization of the camera modules mounted in the mobile communicationsterminals has increased, camera modules for the mobile communicationsterminals have gradually been required to have high resolution andperformance.

Therefore, the number of lenses included in the camera module hasincreased. However, since the mobile communications terminal in whichthe camera module is mounted tends to be miniaturized, it is verydifficult to arrange the lenses in the camera module.

Therefore, research into technology capable of performing aberrationcorrection to implement high resolution and arranging a plurality oflenses in a limited space has been ongoing.

SUMMARY

This Summary is provided to introduce a selection of concepts in asimplified form that are further described below in the DetailedDescription. This Summary is not intended to identify key features oressential features of the claimed subject matter, nor is it intended tobe used as an aid in determining the scope of the claimed subjectmatter.

In one general aspect, an optical imaging system includes a first lens,a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens,and a seventh lens sequentially disposed in numerical order along anoptical axis of the optical imaging system from an object side of theoptical imaging system toward an imaging plane of the optical imagingsystem, wherein the first to seventh lenses are spaced apart from eachother along the optical axis, and the optical imaging system satisfies0.1<L1 w/L7 w<0.4, where L1 w is a weight of the first lens, L7 w is aweight of the seventh lens, and L1 w and L7 w are expressed in a sameunit of measurement.

The optical imaging system may further satisfy 0.1<L1 w/L7 w<0.3.

The optical imaging system may further satisfy 0.01<R1/R4<1.3, where R1is a radius of curvature of an object-side surface of the first lens, R4is a radius of curvature of an image-side surface of the second lens,and R1 and R4 are expressed in a same unit of measurement.

The optical imaging system may further satisfy 0.1<R1/R5<0.7, where R1is a radius of curvature of an object-side surface of the first lens, R5is a radius of curvature of an object-side surface of the third lens,and R1 and R5 are expressed in a same unit of measurement.

The optical imaging system may further satisfy 0.05<R1/R6<0.9, where R6is a radius of curvature of an image-side surface of the third lens, andR1 and R6 are expressed in a same unit of measurement.

The optical imaging system may further satisfy 0.2<R1/R11<1.2, where R1is a radius of curvature of an object-side surface of the first lens,R11 is a radius of curvature of an object-side surface of the sixthlens, and R1 and R11 are expressed in a same unit of measurement.

The optical imaging system may further satisfy 0.8<R1/R14<1.2, where R1is a radius of curvature of an object-side surface of the first lens,R14 is a radius of curvature of an image-side surface of the seventhlens, and R1 and R14 are expressed in a same unit of measurement.

The optical imaging system may further satisfy 0.6<(R11+R14)/(2*R1)<3.0,where R11 is a radius of curvature of an object-side surface of thesixth lens, and R1, R11, and R14 are expressed in a same unit ofmeasurement.

The optical imaging system may further satisfy0.1<(R11+R14)/(R5+R6)<1.0, where R5 is a radius of curvature of anobject-side surface of the third lens, R6 is a radius of curvature of animage-side surface of the third lens, R11 is a radius of curvature of anobject-side surface of the sixth lens, R14 is a radius of curvature ofan image-side surface of the seventh lens, and R5, R6, R11, and R14 areexpressed in a same unit of measurement.

The optical imaging system may further satisfy 0.4<D13/D57<1.2, whereD13 is a distance along the optical axis from an object-side surface ofthe first lens to an image-side surface of the third lens, D57 is adistance along the optical axis from an object-side surface of the fifthlens to an image-side surface of the seventh lens, and D13 and D57 areexpressed in a same unit of measurement.

The optical imaging system may further satisfy0.1<(1/f1+1/f2+1/f3+1/f4+1/f5+1/f6+1/f7)*f<0.8, where f1 is a focallength of the first lens, f2 is a focal length of the second lens, f3 isa focal length of the third lens, f4 is a focal length of the fourthlens, f5 is a focal length of the fifth lens, f6 is a focal length ofthe sixth lens, f7 is a focal length of the seventh lens, f is anoverall focal length of the optical imaging system, and f1, f2, f3, f4,f5, f6, f7, and f are expressed in a same unit of measurement.

The optical imaging system may further satisfy0.1<(1/f1+1/f2+1/f3+1/f4+1/f5+1/f6+1/f7)*TTL<1.0, where f1 is a focallength of the first lens, f2 is a focal length of the second lens, f3 isa focal length of the third lens, f4 is a focal length of the fourthlens, f5 is a focal length of the fifth lens, f6 is a focal length ofthe sixth lens, f7 is a focal length of the seventh lens, TTL is adistance along the optical axis from an object-side surface of the firstlens to the imaging plane, and f1, f2, f3, f4, f5, f6, f7, and TTL areexpressed in a same unit of measurement.

The optical imaging system may further satisfy 0.2<TD1/D67<0.8, whereTD1 is a thickness along the optical axis of the first lens, D67 is adistance along the optical axis from an object-side surface of the sixthlens to an image-side surface of the seventh lens, and TD1 and D67 areexpressed in a same unit of measurement.

The optical imaging system may further satisfy SD12<SD34, where SD12 isa distance along the optical axis from an image-side surface of thefirst lens to an object-side surface of the second lens, SD34 is adistance along the optical axis from an image-side surface of the thirdlens to an object-side surface of the fourth lens, and SD12 and SD34 areexpressed in a same unit of measurement.

The optical imaging system may further satisfy SD56<SD34, where SD56 isa distance along the optical axis from an image-side surface of thefifth lens to an object-side surface of the sixth lens, and SD34 andSD56 are expressed in a same unit of measurement.

The optical imaging system may further satisfy SD56<SD67, where SD67 isa distance along the optical axis from an image-side surface of thesixth lens to an object-side surface of the seventh lens, and SD56 andSD67 are expressed in a same unit of measurement.

The imaging plane may be an imaging plane of an image sensor, and theoptical imaging system may further satisfy 0.6<TTL/(2*IMG HT)<0.9, whereTTL is a distance along the optical axis from an object-side surface ofthe first lens to the imaging plane of the image sensor, IMG HT isone-half of a diagonal length of the imaging plane of the image sensor,and TTL and IMG HT are expressed in a same unit of measurement.

The optical imaging system may further satisfy TTL<6.00 mm, where TTL isexpressed in mm.

The optical imaging system may further satisfy 0.2<ΣSD/ΣTD<0.7, whereΣSD is a sum of air gaps along the optical axis between the first toseventh lenses, ΣTD is a sum of thicknesses along the optical axis ofthe first to seventh lenses, and ΣSD and ΣTD are expressed in a sameunit of measurement.

The optical imaging system may further satisfy0<min(f1:f3)/max(f4:f7)<0.4, where min(f1:f3) is a minimum value ofabsolute values of focal lengths of the first to third lenses,max(f4:f7) is a maximum value of absolute values of focal lengths of thefourth to seventh lenses, and min(f1:f3) and max(f4:f7) are expressed ina same unit of measurement.

The optical imaging system may further satisfy 0.4<ΣTD/TTL<0.7, whereΣTD is a sum of thicknesses along the optical axis of the first toseventh lenses, TTL is a distance along the optical axis from anobject-side surface of the first lens to the imaging plane, and ΣTD andTTL are expressed in a same unit of measurement.

The optical imaging system may further satisfy 0.81<f12/f123<0.96, wheref12 is a composite focal length of the first and second lenses, f123 isa composite focal length of the first to third lenses, and f12 and f123are expressed in a same unit of measurement.

The optical imaging system may further satisfy 0.6<f12/f1234<0.84, wheref12 is a composite focal length of the first and second lenses, f1234 isa composite focal length of the first to fourth lenses, and f12 andf1234 are expressed in a same unit of measurement.

The second lens may have a positive refractive power.

The third lens may have a positive refractive power.

The fifth lens may have a negative refractive power.

A paraxial region of an object-side surface of the fifth lens may beconcave or convex.

A paraxial region of an image-side surface of the fifth lens may beconcave or convex.

A paraxial region of an object-side surface of the sixth lens may beconcave or convex.

A paraxial region of an image-side surface of the sixth lens may beconcave or convex.

A paraxial region of an object-side surface of the seventh lens may beconcave.

The optical imaging system may further include a spacer disposed betweenthe sixth and seventh lenses, and the optical imaging system may furthersatisfy 0.5<S6d/f<1.2, where S6d is an inner diameter of the spacer, fis an overall focal length of the optical imaging system, and S6d and fare expressed in a same unit of measurement.

The optical imaging system may further satisfy 0.4<L1TR/L7TR<0.7, whereL1TR is an overall outer diameter of the first lens, L7TR is an overallouter diameter of the seventh lens, and L1TR and L7TR are expressed in asame unit of measurement.

The optical imaging system may further satisfy 0.5<L1234TRavg/L7TR<0.75,where L1234TRavg is an average value of overall outer diameters of thefirst to fourth lenses, L7TR is an overall outer diameter of the seventhlens, and L1234TRavg and L7TR are expressed in a same unit ofmeasurement.

The optical imaging system may further satisfy0.5<L12345TRavg/L7TR<0.76, where L12345TRavg is an average value ofoverall outer diameters of the first to fifth lenses, L7TR is an overallouter diameter of the seventh lens, and L12345TRavg and L7TR areexpressed in a same unit of measurement.

Other features and aspects will be apparent from the following detaileddescription, the drawings, and the claims.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a view illustrating a first example of an optical imagingsystem.

FIG. 2 illustrates aberration curves of the optical imaging system ofFIG. 1.

FIG. 3 is a view illustrating a second example of an optical imagingsystem.

FIG. 4 illustrates aberration curves of the optical imaging system ofFIG. 3.

FIG. 5 is a view illustrating a third example of an optical imagingsystem.

FIG. 6 illustrates aberration curves of the optical imaging system ofFIG. 5.

FIG. 7 is a view illustrating a fourth example of an optical imagingsystem.

FIG. 8 illustrates aberration curves of the optical imaging system ofFIG. 7.

FIG. 9 is a view illustrating a fifth example of an optical imagingsystem.

FIG. 10 illustrates aberration curves of the optical imaging system ofFIG. 9.

FIG. 11 is a view illustrating a sixth example of an optical imagingsystem.

FIG. 12 illustrates aberration curves of the optical imaging system ofFIG. 11.

FIG. 13 is a view illustrating a seventh example of an optical imagingsystem.

FIG. 14 illustrates aberration curves of the optical imaging system ofFIG. 13.

FIG. 15 is a view illustrating an eighth example of an optical imagingsystem.

FIG. 16 illustrates aberration curves of the optical imaging system ofFIG. 15.

FIG. 17 is a view illustrating a ninth example of an optical imagingsystem.

FIG. 18 illustrates aberration curves of the optical imaging system ofFIG. 17.

FIG. 19 is a view illustrating a tenth example of an optical imagingsystem.

FIG. 20 illustrates aberration curves of the optical imaging system ofFIG. 19.

FIG. 21 is a view illustrating an eleventh example of an optical imagingsystem.

FIG. 22 illustrates aberration curves of the optical imaging system ofFIG. 21.

FIG. 23 is a view illustrating a twelfth example of an optical imagingsystem.

FIG. 24 illustrates aberration curves of the optical imaging system ofFIG. 23.

FIG. 25 is a view illustrating a thirteenth example of an opticalimaging system.

FIG. 26 illustrates aberration curves of the optical imaging system ofFIG. 25.

FIG. 27 is a view illustrating a fourteenth example of an opticalimaging system.

FIG. 28 illustrates aberration curves of the optical imaging system ofFIG. 27.

FIG. 29 is a view illustrating a fifteenth example of an optical imagingsystem.

FIG. 30 illustrates aberration curves of the optical imaging system ofFIG. 29.

FIG. 31 is a view illustrating a sixteenth example of an optical imagingsystem.

FIG. 32 illustrates aberration curves of the optical imaging system ofFIG. 31.

FIG. 33 is a view illustrating a seventeenth example of an opticalimaging system.

FIG. 34 illustrates aberration curves of the optical imaging system ofFIG. 33.

FIG. 35 is a view illustrating an eighteenth example of an opticalimaging system.

FIG. 36 illustrates aberration curves of the optical imaging system ofFIG. 35.

FIG. 37 is a view illustrating a nineteenth example of an opticalimaging system.

FIG. 38 illustrates aberration curves of the optical imaging system ofFIG. 37.

FIG. 39 is a view illustrating a twentieth example of an optical imagingsystem.

FIG. 40 illustrates aberration curves of the optical imaging system ofFIG. 39.

FIG. 41 is a view illustrating a twenty-first example of an opticalimaging system.

FIG. 42 illustrates aberration curves of the optical imaging system ofFIG. 41.

FIG. 43 is a view illustrating a twenty-second example of an opticalimaging system.

FIG. 44 illustrates aberration curves of the optical imaging system ofFIG. 43.

FIG. 45 is a view illustrating a twenty-third example of an opticalimaging system.

FIG. 46 illustrates aberration curves of the optical imaging system ofFIG. 45.

FIG. 47 is a view illustrating a twenty-fourth example of an opticalimaging system.

FIG. 48 illustrates aberration curves of the optical imaging system ofFIG. 47.

FIG. 49 is a view illustrating a twenty-fifth example of an opticalimaging system.

FIG. 50 illustrates aberration curves of the optical imaging system ofFIG. 49.

FIGS. 51 and 52 are cross-sectional views illustrating examples of anoptical imaging system and a lens barrel coupled to each other.

FIG. 53 is a cross-sectional view illustrating an example of a shape ofa rib of a seventh lens.

FIG. 54 is a cross-sectional view illustrating an example of a seventhlens.

Throughout the drawings and the detailed description, the same referencenumerals refer to the same elements. The drawings may not be to scale,and the relative size, proportions, and depiction of elements in thedrawings may be exaggerated for clarity, illustration, and convenience.

DETAILED DESCRIPTION

The following detailed description is provided to assist the reader ingaining a comprehensive understanding of the methods, apparatuses,and/or systems described herein. However, various changes,modifications, and equivalents of the methods, apparatuses, and/orsystems described herein will be apparent after an understanding of thedisclosure of this application. For example, the sequences of operationsdescribed herein are merely examples, and are not limited to those setforth herein, but may be changed as will be apparent after anunderstanding of the disclosure of this application, with the exceptionof operations necessarily occurring in a certain order. Also,descriptions of features that are known in the art may be omitted forincreased clarity and conciseness.

The features described herein may be embodied in different forms, andare not to be construed as being limited to the examples describedherein. Rather, the examples described herein have been provided merelyto illustrate some of the many possible ways of implementing themethods, apparatuses, and/or systems described herein that will beapparent after an understanding of the disclosure of this application.

Throughout the specification, when an element, such as a layer, region,or substrate, is described as being “on,” “connected to,” or “coupledto” another element, it may be directly “on,” “connected to,” or“coupled to” the other element, or there may be one or more otherelements intervening therebetween. In contrast, when an element isdescribed as being “directly on,” “directly connected to,” or “directlycoupled to” another element, there can be no other elements interveningtherebetween.

As used herein, the term “and/or” includes any one and any combinationof any two or more of the associated listed items.

Although terms such as “first,” “second,” and “third” may be used hereinto describe various members, components, regions, layers, or sections,these members, components, regions, layers, or sections are not to belimited by these terms. Rather, these terms are only used to distinguishone member, component, region, layer, or section from another member,component, region, layer, or section. Thus, a first member, component,region, layer, or section referred to in examples described herein mayalso be referred to as a second member, component, region, layer, orsection without departing from the teachings of the examples.

Spatially relative terms such as “above,” “upper,” “below,” and “lower”may be used herein for ease of description to describe one element'srelationship to another element as shown in the figures. Such spatiallyrelative terms are intended to encompass different orientations of thedevice in use or operation in addition to the orientation depicted inthe figures. For example, if the device in the figures is turned over,an element described as being “above” or “upper” relative to anotherelement will then be “below” or “lower” relative to the other element.Thus, the term “above” encompasses both the above and below orientationsdepending on the spatial orientation of the device. The device may alsobe oriented in other ways (for example, rotated by 90 degrees or atother orientations), and the spatially relative terms used herein are tobe interpreted accordingly.

The terminology used herein is for describing various examples only, andis not to be used to limit the disclosure. The articles “a,” “an,” and“the” are intended to include the plural forms as well, unless thecontext clearly indicates otherwise. The terms “comprises,” “includes,”and “has” specify the presence of stated features, numbers, operations,members, elements, and/or combinations thereof, but do not preclude thepresence or addition of one or more other features, numbers, operations,members, elements, and/or combinations thereof.

Thicknesses, sizes, and shapes of lenses illustrated in the drawings mayhave been slightly exaggerated for convenience of explanation. Inaddition, the shapes of spherical surfaces or aspherical surfaces of thelenses described in the detailed description and illustrated in thedrawings are merely examples. That is, the shapes of the sphericalsurfaces or the aspherical surfaces of the lenses are not limited to theexamples described herein.

Numerical values of radii of curvature, thicknesses of lenses, distancesbetween elements including lenses or surfaces, effective aperture radiiof lenses, focal lengths, and diameters, thicknesses, and lengths ofvarious elements are expressed in millimeters (mm), and angles areexpressed in degrees. Thicknesses of lenses and distances betweenelements including lenses or surfaces are measured along the opticalaxis of the optical imaging system.

The term “effective aperture radius” as used in this application refersto a radius of a portion of a surface of a lens or other element (anobject-side surface or an image-side surface of a lens or other element)through which light actually passes. The effective aperture radius isequal to a distance measured perpendicular to an optical axis of thesurface between the optical axis of the surface and the outermost pointon the surface through which light actually passes. Therefore, theeffective aperture radius may be equal to a radius of an optical portionof a surface, or may be smaller than the radius of the optical portionof the surface if light does not pass through a peripheral portion ofthe optical portion of the surface. The object-side surface and theimage-side surface of a lens or other element may have differenteffective aperture radii.

In this application, unless stated otherwise, a reference to the shapeof a lens surface means the shape of a paraxial region of the lenssurface. A paraxial region of a lens surface is a central portion of thelens surface surrounding the optical axis of the lens surface in whichlight rays incident to the lens surface make a small angle θ to theoptical axis and the approximations sin θ≈θ, tan θ≈θ, and cos θ≈1 arevalid.

For example, a statement that the object-side surface of a lens isconvex means that at least a paraxial region of the object-side surfaceof the lens is convex, and a statement that the image-side surface ofthe lens is concave means that at least a paraxial region of theimage-side surface of the lens is concave. Therefore, even though theobject side-surface of the lens may be described as being convex, theentire object-side surface of the lens may not be convex, and aperipheral region of the object-side surface of the lens may be concave.Also, even though the image-side surface of the lens may be described asbeing concave, the entire image-side surface of the lens may not beconcave, and a peripheral region of the image-side surface of the lensmay be convex.

FIGS. 51 and 52 are cross-sectional views illustrating examples of anoptical imaging system and a lens barrel coupled to each other.

Referring to FIGS. 51 and 52, an optical imaging system 100 includes aplurality of lenses disposed along an optical axis. In addition, theoptical imaging system 100 further includes a lens barrel 200accommodating the plurality of lenses therein. The plurality of lensesare spaced apart from each other by predetermined distances along theoptical axis.

Each lens of the optical imaging system 100 includes an optical portionand a rib. The optical portion of the lens is a portion of the lens thatis configured to refract light, and is generally formed in a centralportion of the lens. The rib of the lens is an edge portion of the lensthat enables the lens to be mounted in the lens barrel 200 and theoptical axis of the lens to be aligned with the optical axis of theoptical imaging system 100. The rib of the lens extends radially outwardfrom the optical portion, and may be formed integrally with the opticalportion. The optical portions of the lenses are generally not in contactwith each other. For example, the first to seventh lenses are mounted inthe lens barrel 200 so that they are spaced apart from one another bypredetermined distances along the optical axis of the optical imagingsystem 100. The ribs of the lenses may be in selective contact with eachother. For example, the ribs of the first to fourth lenses, or the firstto fifth lenses, or the second to fourth lenses, may be in contact witheach other so that the optical axes of these lenses may be easilyaligned with the optical axis of the optical imaging system 100.

The examples of the optical imaging system 100 described in thisapplication may include a self-alignment structure as illustrated inFIGS. 51 and 52.

In one example illustrated in FIG. 51, the optical imaging system 100includes a self-alignment structure in which optical axes of fourconsecutive lenses 1000, 2000, 3000, and 4000 are aligned with anoptical axis of the optical imaging system 100 by coupling the fourlenses 1000, 2000, 3000, and 4000 to one another.

The first lens 1000 disposed closest to an object side of the opticalimaging system 100 is disposed in contact with an inner surface of thelens barrel 200 to align the optical axis of the first lens 1000 withthe optical axis of the optical imaging system 100, the second lens 2000is coupled to the first lens 1000 to align the optical axis of thesecond lens 2000 with the optical axis of the optical imaging system100, the third lens 3000 is coupled to the second lens 2000 to align theoptical axis of the third lens 3000 with the optical axis of the opticalimaging system 100, and the fourth lens 4000 is coupled to the thirdlens 3000 to align the optical axis of the fourth lens 4000 with theoptical axis of the optical imaging system 100. The second lens 2000 tothe fourth lens 4000 may not be disposed in contact with the innersurface of the lens barrel 200.

Although FIG. 51 illustrates that the first lens 1000 to the fourth lens4000 are coupled to one another, the four consecutive lenses that arecoupled to one another may be changed to the second lens 2000 to a fifthlens 5000, the third lens 3000 to a sixth lens 6000, or the fourth lens4000 to a seventh lens 7000.

In another example illustrated in FIG. 52, the optical imaging system100 includes a self-alignment structure in which optical axes of fiveconsecutive lenses 1000, 2000, 3000, 4000, and 5000 are aligned with anoptical axis of the optical imaging system 100 by coupling the fivelenses 1000, 2000, 3000, 4000, and 5000 to one another.

The first lens 1000 disposed closest to an object side of the opticalimaging system 100 is disposed in contact with an inner surface of thelens barrel 200 to align an optical axis of the first lens 1000 with theoptical axis of the optical imaging system 100, the second lens 2000 iscoupled to the first lens 1000 to align the optical axis of the secondlens 2000 with the optical axis of the optical imaging system 100, thethird lens 3000 is coupled to the second lens 2000 to align the opticalaxis of the third lens 3000 with the optical axis of the optical imagingsystem 100, the fourth lens 4000 is coupled to the third lens 3000 toalign the optical axis of the fourth lens 4000 with the optical axis ofthe optical imaging system 100, and the fifth lens 5000 is coupled tothe fourth lens 4000 to align the optical axis of the fifth lens 5000with the optical axis of the optical imaging system 100. The second lens2000 to the fifth lens 5000 may not be disposed in contact with theinner surface of the lens barrel 200.

Although FIG. 52 illustrates that the first lens 1000 to the fifth lens5000 are coupled to one another, the five consecutive lenses that arecoupled to one another may be changed to the second lens 2000 to a sixthlens 6000, or the third lens 3000 to a seventh lens 7000.

The first lens 1000 is a lens closest to an object (or a subject) to beimaged by the optical imaging system 100, while the seventh lens 7000 isa lens closest to an image sensor (not shown in FIGS. 51 and 52, but seethe image sensor 190 in FIG. 1, for example).

In addition, an object-side surface of a lens is a surface of the lensfacing the object, and an image-side surface of a lens is a surface ofthe lens facing the image sensor.

The examples of the optical imaging system 100 disclosed in thisapplication include seven lenses.

For example, referring to FIGS. 51 and 52, the optical imaging system100 includes a first lens 1000, a second lens 2000, a third lens 3000, afourth lens 4000, a fifth lens 5000, a sixth lens 6000, and a seventhlens 7000 sequentially disposed in numerical order along an optical axisof the optical imaging system 100 from an object side of the opticalimaging system 100 toward an imaging plane of the optical imaging system100.

The optical imaging system 100 further includes an image sensor and afilter. The image sensor forms an imaging plane, and converts lightrefracted by the first to seventh lenses into an electric signal. Thefilter is disposed between the seventh lens and the imaging plane, andblocks infrared rays in the light refracted by the first to seventhlenses from being incident on the imaging plane.

In addition, the optical imaging system 100 further includes a stop toadjust an amount of light incident on the imaging plane. For example,the stop may be disposed in front of the first lens 1000, or between thefirst lens 1000 and the second lens 2000, or between the second lens2000 and the third lens 3000, or at the position of either anobject-side surface or an image-side surface of one of the first lens1000 to the third lens 3000. The stop may be disposed relatively closeto the first lens 1000 to reduce a total length (TTL) of the opticalimaging system 100. Some examples may include two stops, one of whichmay be disposed in front of the first lens 1000, or at the position ofthe object-side surface of the first lens 1000, or between theobject-side surface and the image-side surface of the first lens 1000.

In the examples illustrated in FIGS. 51 and 52, a spacer is disposedbetween each pair of adjacent lenses. At least a portion of the rib ofeach lens is in contact with one or two of the spacers. The spacersmaintain spacings between the lenses, and block stray light fromreaching the imaging plane.

The spacers include a first spacer SP1, a second spacer SP2, a thirdspacer SP3, a fourth spacer SP4, a fifth spacer SP5, and a sixth spacerSP6 disposed from the object side of the optical imaging system 100toward the image sensor. In some examples, the spacers further include aseventh spacer SP7.

The first spacer SP1 is disposed between the first lens 1000 and thesecond lens 2000, the second spacer SP2 is disposed between the secondlens 2000 and the third lens 3000, the third spacer SP3 is disposedbetween the third lens 3000 and the fourth lens 4000, the fourth spacerSP4 is disposed between the fourth lens 4000 and the fifth lens 5000,the fifth spacer SP5 is disposed between the fifth lens 5000 and thesixth lens 6000, and the sixth spacer SP6 is disposed between the sixthlens 6000 and the seventh lens 7000. When the seventh spacer SP7 isincluded, the seventh spacer SP7 is disposed between the sixth lens 6000and the sixth spacer SP6. A thickness of the seventh spacer SP7 in anoptical axis direction may be greater than a thickness of the sixthspacer SP6 in the optical axis direction.

The first lens has a positive refractive power or a negative refractivepower. In addition, the first lens may have a meniscus shape of which anobject-side surface is convex. In detail, an object-side surface of thefirst lens may be convex, and an image-side surface thereof may beconcave.

At least one of the object-side surface and the image-side surface ofthe first lens may be aspherical. For example, both surfaces of thefirst lens may be aspherical.

The second lens has a positive refractive power or a negative refractivepower. In addition, the second lens may have a meniscus shape of whichan object-side surface is convex. In detail, an object-side surface ofthe second lens may be convex, and an image-side surface thereof may beconcave.

Alternatively, both surfaces of the second lens may be convex. Indetail, the object-side surface and the image-side surface of the secondlens may be convex.

At least one of the object-side surface and the image-side surface ofthe second lens may be aspherical. For example, both surfaces of thesecond lens may be aspherical.

The third lens has a positive refractive power or a negative refractivepower. In addition, the third lens may have a meniscus shape of which anobject-side surface is convex. In detail, an object-side surface of thethird lens may be convex, and an image-side surface thereof may beconcave.

Alternatively, both surfaces of the third lens may be convex. In detail,the object-side surface and the image-side surface of the third lens maybe convex.

Alternatively, the third lens may have a meniscus shape of which animage-side surface is convex. In detail, an object-side surface of thethird lens may be concave, and an image-side surface thereof may beconvex.

At least one of the object-side surface and the image-side surface ofthe third lens may be aspherical. For example, both surfaces of thethird lens may be aspherical.

The fourth lens has a positive refractive power or a negative refractivepower. In addition, the fourth lens may have a meniscus shape of whichan object-side surface is convex. In detail, an object-side surface ofthe fourth lens may be convex, and an image-side surface thereof may beconcave.

Alternatively, both surfaces of the fourth lens may be convex. Indetail, the object-side surface and the image-side surface of the fourthlens may be convex.

Alternatively, the fourth lens may have a meniscus shape of which animage-side surface is convex. In detail, an object-side surface of thefourth lens may be concave, and an image-side surface thereof may beconvex.

At least one of the object-side surface and the image-side surface ofthe fourth lens may be aspherical. For example, both surfaces of thefourth lens may be aspherical.

The fifth lens has a positive refractive power or a negative refractivepower. In addition, the fifth lens may have a meniscus shape of which anobject-side surface is convex. In detail, an object-side surface of thefifth lens may be convex, and an image-side surface thereof may beconcave.

Alternatively, the fifth lens may have a meniscus shape of which animage-side surface is convex. In detail, an object-side surface of thefifth lens may be concave, and an image-side surface thereof may beconvex.

At least one of the object-side surface and the image-side surface ofthe fifth lens may be aspherical. For example, both surfaces of thefifth lens may be aspherical.

The sixth lens has a positive refractive power or a negative refractivepower. In addition, the sixth lens may have a meniscus shape of which anobject-side surface is convex. In detail, an object-side surface of thesixth lens may be convex, and an image-side surface thereof may beconcave.

Alternatively, both surfaces of the sixth lens may be convex. In detail,the object-side surface and the image-side surface of the sixth lens maybe convex.

Alternatively, the sixth lens may have a meniscus shape of which animage-side surface is convex. In detail, an object-side surface of thesixth lens may be concave, and an image-side surface thereof may beconvex.

Alternatively, both surfaces of the sixth lens may be concave. Indetail, the object-side surface and the image-side surface of the sixthlens may be concave.

At least one of the object-side surface and the image-side surface ofthe sixth lens may be aspherical. For example, both surfaces of thesixth lens may be aspherical.

The seventh lens has a positive refractive power or a negativerefractive power. In addition, the seventh lens may have a meniscusshape of which an object-side surface is convex. In detail, anobject-side surface of the seventh lens may be convex, and an image-sidesurface thereof may be concave.

Alternatively, both surfaces of the seventh lens may be concave. Indetail, the object-side surface and the image-side surface of theseventh lens may be concave.

At least one of the object-side surface and the image-side surface ofthe seventh lens may be aspherical. For example, both surfaces of theseventh lens may be aspherical.

In addition, at least one inflection point may be formed on at least oneof the object-side surface and the image-side surface of the seventhlens. An inflection point is a point where a lens surface changes fromconvex to concave, or from concave to convex. A number of inflectionpoints is counted from a center of the lens to an outer edge of theoptical portion of the lens. For example, the object-side surface of theseventh lens may be convex in a paraxial region, and become concavetoward an edge thereof. The image-side surface of the seventh lens maybe concave in a paraxial region, and become convex toward an edgethereof.

FIG. 53 is a cross-sectional view illustrating an example of a shape ofa rib of a seventh lens.

Light reflected from the object (or the subject) may be refracted by thefirst to seventh lenses. In this case, an unintended reflection of thelight may occur. The unintended reflection of the light, which is lightunrelated to formation of an image, may cause a flare phenomenon in acaptured image.

The examples of the optical imaging system 100 described in thisapplication may include a structure for preventing a flare phenomenonand reflection.

For example, as illustrated in FIG. 53, a rib of the seventh lens 7000disposed closest to the image sensor includes a surface-treated area EA.The surface-treated area EA is a portion of a surface of the rib thathas been surface-treated to be rougher than other portions of thesurface of the rib. For example, the surface-treated area EA may beformed by chemical etching, physical grinding, or any other surfacetreatment method capable of increasing a roughness of a surface. Thesurface-treated area EA scatters reflected light.

Therefore, even though the unintended reflection of the light may occur,the reflected light is prevented from being concentrated at one point,and therefore the occurrence of the flare phenomenon may be suppressed.

The surface-treated area EA may be formed in an entire area from an edgeof the optical portion of the seventh lens 7000 through which lightactually passes to an outer end of the rib. However, as illustrated inFIG. 53, non-treated areas NEA including step portions E11, E21, and E22may not be surface-treated, or may be surface-treated to have aroughness less than a roughness of the surface-treated area EA. The stepportions E11, E21, and E22 are portions where the thickness of the ribabruptly changes. A first non-treated area NEA formed on an object-sidesurface of the seventh lens 7000 and including a first step portion E11and a second non-treated area NEA formed on an image-side surface of theseventh lens 7000 and including a second step portion E12 and a thirdstep portion E22 may overlap each other when viewed in the optical axisdirection.

A width G1 of the first non-treated area NEA formed on the object-sidesurface of the seventh lens 7000 may be different from a width G2 of thesecond non-treated area NEA formed on the image-side surface of theseventh lens 7000. In the example illustrated in FIG. 53, G1 is greaterthan G2.

The width G1 of the first non-treated area NEA includes the first stepportion E11, the second step portion E21, and the third step portion E22when viewed in the optical axis direction, and the width G2 of thesecond non-treated area includes the second step portion E21 and thethird step portion E22 but not the first step portion E11 when viewed inthe optical axis direction. A distance G4 from the outer end of the ribto the second step portion E21 is smaller than a distance G3 from theouter end of the rib to the first step portion E11. Similarly, adistance G5 from the outer end of the rib to the third step portion E22is smaller than the distance G3 from the outer end of the rib to thefirst step portion E11.

The positions at which the non-treated areas NEA and the step portionsE11, E21, and E22 are formed as described above and shown in FIG. 53 maybe advantageous for measuring a concentricity of the seventh lens 7000.

The lenses of the optical imaging system may be made of a light materialhaving a high light transmittance. For example, the first to seventhlenses may be made of a plastic material. However, a material of thefirst to seventh lenses is not limited to the plastic material.

In addition, the first to seventh lenses may have at least oneaspherical surface. That is, at least one of the object-side surface andthe image-side surface of all of the first to seventh lenses may beaspherical. The aspherical surfaces of the first to seventh lenses maybe represented by the following Equation 1:

$\begin{matrix}{Z = {\frac{{cY}^{2}}{1 + \sqrt{1 - {( {1 + K} )c^{2}Y^{2}}}} + {AY}^{4} + {BY}^{6} + {CY}^{8} + {DY}^{10} + {EY}^{12} + {FY}^{14} + {GY}^{16} + {HY}^{18} + \ldots}} & (1)\end{matrix}$

In Equation 1, c is a curvature of a lens surface and is equal to aninverse of a radius of curvature of the lens surface at an optical axisof the lens surface, K is a conic constant, Y is a distance from acertain point on an aspherical surface of the lens to an optical axis ofthe lens in a direction perpendicular to the optical axis, A to H areaspherical constants, Z (or sag) is a distance between the certain pointon the aspherical surface of the lens at the distance Y to the opticalaxis and a tangential plane perpendicular to the optical axis meetingthe apex of the aspherical surface of the lens. Some of the examplesdisclosed in this application include an aspherical constant J. Anadditional term of JY²⁰ may be added to the right side of Equation 1 toreflect the effect of the aspherical constant J.

The optical imaging system may satisfy one or more of the followingConditional Expressions 1 to 5:

0.1<L1w/L7w<0.4  (Conditional Expression 1)

0.5<S6d/f<1.4  (Conditional Expression 2)

0.4<L1TR/L7TR<1.9  (Conditional Expression 3)

0.5<L1234TRavg/L7TR<0.9  (Conditional Expression 4)

0.5<L12345TRavg/L7TR<0.9  (Conditional Expression 5)

In the above Conditional Expressions, L1 w is a weight of the firstlens, and L7 w is a weight of the seventh lens.

S6d is an inner diameter of the sixth spacer, and f is an overall focallength of the optical imaging system.

L1TR is an overall outer diameter of the first lens, and L7TR is anoverall outer diameter of the seventh lens. The overall outer diameterof a lens is an outer diameter of the lens including both the opticalportion of the lens and the rib of the lens.

L1234TRavg is an average value of overall outer diameters of the firstto fourth lenses, and L12345TRavg is an average value of overall outerdiameters of the first to fifth lenses.

Conditional Expression 1 is a conditional expression related to a weightratio between the first lens and the seventh lens, and when ConditionalExpression 1 is satisfied, optical axes may be easily aligned with oneanother through contact between the respective lenses and contactbetween the lenses and the lens barrel.

Conditional Expression 2 is a conditional expression related to a ratiobetween the inner diameter of the sixth spacer disposed between thesixth lens and the seventh lens and the overall focal length of theoptical imaging system, and when Conditional Expression 2 is satisfied,the flare phenomenon due to the unintended reflection of the light maybe suppressed.

Conditional Expression 3 is a conditional expression related to a ratiobetween the overall outer diameter of the first lens and the overallouter diameter of the seventh lens, and when Conditional Expression 3 issatisfied, optical axes may be easily aligned with one another throughcontact between the respective lenses and contact between the lenses andthe lens barrel.

Conditional Expression 4 is a conditional expression related to a ratiobetween the average value of the overall outer diameters of the first tofourth lenses and the overall outer diameter of the seventh lens, andwhen Conditional Expression 4 is satisfied, aberration may be easilycorrected to improve resolution.

Conditional Expression 5 is a conditional expression related to a ratiobetween the average value of the overall outer diameters of the first tofifth lenses and the overall outer diameter of the seventh lens, andwhen Conditional Expression 5 is satisfied, aberration may be easilycorrected to improve resolution.

The optical imaging system may also satisfy one or more of the followingConditional Expressions 6 to 10:

0.1<L1w/L7w<0.3  (Conditional Expression 6)

0.5<S6d/f<1.2  (Conditional Expression 7)

0.4<L1TR/L7TR<0.7  (Conditional Expression 8)

0.5<L1234TRavg/L7TR<0.75  (Conditional Expression 9)

0.5<L12345TRavg/L7TR<0.76  (Conditional Expression 10)

Conditional Expressions 6 to 10 are the same as Conditional Expressions1 to 5, except that Conditional Expressions 6 to 10 specify narrowerranges.

The optical imaging system may also satisfy one or more of the followingConditional Expressions 11 to 32:

0.01<R1/R4<1.3  (Conditional Expression 11)

0.1<R1/R5<0.7  (Conditional Expression 12)

0.05<R1/R6<0.9  (Conditional Expression 13)

0.2<R1/R11<1.2  (Conditional Expression 14)

0.8<R1/R14<1.2  (Conditional Expression 15)

0.6<(R11+R14)/(2*R1)<3.0  (Conditional Expression 16)

0.4<D13/D57<1.2  (Conditional Expression 17)

0.1<(1/f1+1/f2+1/f3+1/f4+1/f5+1/f6+1/f7)*f<0.8  (Conditional Expression18)

0.1<(1/f1+1/f2+1/f3+1/f4+1/f5+1/f6+1/f7)*TTL<1.0   (ConditionalExpression 19)

0.2<TD1/D67<0.8  (Conditional Expression 20)

0.1<(R11+R14)/(R5+R6)<1.0  (Conditional Expression 21)

SD12<SD34  (Conditional Expression 22)

SD56<SD67  (Conditional Expression 23)

SD56<SD34  (Conditional Expression 24)

0.6<TTL/(2*IMG HT)<0.9  (Conditional Expression 25)

0.2<ΣSD/ΣTD<0.7  (Conditional Expression 26)

0<min(f1:f3)/max(f4:f7)<0.4  (Conditional Expression 27)

0.4<ΣTD/TTL<0.7  (Conditional Expression 28)

0.7<SL/TTL<1.0  (Conditional Expression 29)

0.81<f12/f123<0.96  (Conditional Expression 30)

0.6<f12/f1234<0.84  (Conditional Expression 31)

TTL<6.00  (Conditional Expression 32)

In the above Conditional Expressions, R1 is a radius of curvature of anobject-side surface of the first lens, R4 is a radius of curvature of animage-side surface of the second lens, R5 is a radius of curvature of anobject-side surface of the third lens, R6 is a radius of curvature of animage-side surface of the third lens, R11 is a radius of curvature of anobject-side surface of the sixth lens, and R14 is a radius of curvatureof an image-side surface of the seventh lens.

D13 is a distance along an optical axis of the optical imaging systemfrom the object-side surface of the first lens to the image-side surfaceof the third lens, and D57 is a distance along the optical axis from anobject-side surface of the fifth lens to the image-side surface of theseventh lens.

f1 is a focal length of the first lens, f2 is a focal length of thesecond lens, f3 is a focal length of the third lens, f4 is a focallength of the fourth lens, f5 is a focal length of the fifth lens, f6 isa focal length of the sixth lens, f7 is a focal length of the seventhlens, f is an overall focal length of the optical imaging system, andTTL is a distance along the optical axis from the object-side surface ofthe first lens to an imaging plane of an image sensor of the opticalimaging system.

TD1 is a thickness along the optical axis of the first lens, and D67 isa distance along the optical axis from the object-side surface of thesixth lens to the image-side surface of the seventh lens.

SD12 is a distance along an optical axis from an image-side surface ofthe first lens to an object-side surface of the second lens, SD34 is adistance along the optical axis from the image-side surface of the thirdlens to an object-side surface of the fourth lens, SD56 is a distancealong the optical axis from an image-side surface of the fifth lens tothe object-side surface of the sixth lens, and SD67 is a distance alongthe optical axis from an image-side surface of the sixth lens to anobject-side surface of the seventh lens.

IMG HT is one-half of a diagonal length of the imaging plane of theimage sensor.

ΣSD is a sum of air gaps along the optical axis between the first toseventh lenses, and ΣTD is a sum of thicknesses along the optical axisof the first to seventh lenses. An air gap is a distance along theoptical axis between adjacent ones of the first to seventh lenses.

min(f1:f3) is a minimum value of absolute values of the focal lengths ofthe first to third lenses, and max(f4:f7) is a maximum value of absolutevalues of the focal lengths of the fourth to seventh lenses.

SL is a distance along the optical axis from the stop to the imagingplane of the image sensor.

f12 is a composite focal length of the first and second lenses, f123 isa composite focal length of the first to third lenses, and f1234 is acomposite focal length of the first to fourth lenses.

When Conditional Expression 11 is satisfied, correction effects oflongitudinal spherical aberration and astigmatic field curves may beimproved, and resolution may thus be improved.

When Conditional Expression 12 is satisfied, correction effects oflongitudinal spherical aberration and astigmatic field curves may beimproved, and resolution may thus be improved.

When Conditional Expression 13 is satisfied, correction effects oflongitudinal spherical aberration and astigmatic field curves may beimproved, and resolution may thus be improved.

When Conditional Expression 14 is satisfied, a correction effect oflongitudinal spherical aberration may be improved, and the flarephenomenon may be prevented. Therefore, resolution may be improved.

When Conditional Expression 15 is satisfied, a correction effect oflongitudinal spherical aberration may be improved, and an imaging planecurvature phenomenon may be suppressed. Therefore, resolution may beimproved.

When Conditional Expression 16 is satisfied, a correction effect oflongitudinal spherical aberration may be improved, an imaging planecurvature phenomenon may be suppressed, and the flare phenomenon may beprevented. Therefore, resolution may be improved.

When Conditional Expression 17 is satisfied, a slim optical imagingsystem may be implemented.

When Conditional Expression 18 is satisfied, sensitivity of each lensmay be improved to improve mass productivity.

When Conditional Expression 20 is satisfied, a slim optical imagingsystem may be implemented.

When Conditional Expression 22 is satisfied, a chromatic aberrationcorrection effect may be improved.

When Conditional Expression 25 is satisfied, a slim optical imagingsystem may be implemented.

When Conditional Expression 26 is satisfied, mass productivity of eachlens may be improved, and a slim optical imaging system may beimplemented.

When Conditional Expression 27 is satisfied, a slim optical imagingsystem may be implemented.

When Conditional Expression 28 is satisfied, mass productivity of eachlens may be improved, and a slim optical imaging system may beimplemented.

When Conditional Expression 29 is satisfied, a slim optical imagingsystem may be implemented.

When Conditional Expression 30 is satisfied, a slim optical imagingsystem may be implemented.

When Conditional Expression 31 is satisfied, a slim optical imagingsystem may be implemented.

Next, various examples of the optical imaging system will be described.In the tables that appear in the following examples, S1 denotes anobject-side surface of a first lens, S2 denotes an image-side surface ofthe first lens, S3 denotes an object-side surface of a second lens, S4denotes an image-side surface of the second lens, S5 denotes anobject-side surface of a third lens, S6 denotes an image-side surface ofthe third lens, S7 denotes an object-side surface of a fourth lens, S8denotes an image-side surface of the fourth lens, S9 denotes anobject-side surface of a fifth lens, S10 denotes an image-side surfaceof the fifth lens, S11 denotes an object-side surface of a sixth lens,S12 denotes an image-side surface of the sixth lens, S13 denotes anobject-side surface of a seventh lens, S14 denotes an image-side surfaceof the seventh lens, S15 denotes an object-side surface of a filter, S16denotes an image-side surface of the filter, and S17 denotes an imagingplane.

First Example

FIG. 1 is a view illustrating a first example of an optical imagingsystem, and FIG. 2 illustrates aberration curves of the optical imagingsystem of FIG. 1.

The first example of the optical imaging system includes a first lens110, a second lens 120, a third lens 130, a fourth lens 140, a fifthlens 150, a sixth lens 160, a seventh lens 170, an infrared cut-offfilter 180, an image sensor 190, and a stop (not shown) disposed betweenthe second lens 120 and the third lens 130.

The first lens 110 has a positive refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 120 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The third lens 130 has a positive refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fourth lens 140 has a positive refractive power, a paraxial regionof an object-side surface thereof is concave, and a paraxial region ofan image-side surface thereof is convex.

The fifth lens 150 has a negative refractive power, a paraxial region ofan object-side surface thereof is concave, and a paraxial region of animage-side surface thereof is convex.

The sixth lens 160 has a positive refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The seventh lens 170 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

Two inflection points are formed on the object-side surface of theseventh lens 170. For example, the object-side surface of the seventhlens 170 is convex in the paraxial region, becomes concave in a regionoutside the paraxial region, and becomes convex toward an edge thereof.

In addition, one inflection point is formed on the image-side surface ofthe seventh lens 170. For example, the image-side surface of the seventhlens 170 is concave in the paraxial region, and becomes convex toward anedge thereof.

Although not illustrated in FIG. 1, the stop is disposed at a distanceof 0.670 mm from the object-side surface of the first lens 110 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 1 listed in Table 51 that appears later in this application.

Table 1 below shows physical properties of the lenses and other elementsof the optical imaging system of FIG. 1, and Table 2 below showsaspherical surface coefficients of the lenses of FIG. 1. Both surfacesof all of the lenses of FIG. 1 are aspherical.

TABLE 1 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First1.32177197 0.4999327 1.546 56.114 0.92 S2 Lens 4.3592239 0.02 0.88 S3Second 3.55744846 0.15 1.669 20.353 0.85 S4 Lens 2.1807528 0.16054080.78 S5 Third 3.19075254 0.2250968 1.546 56.114 0.78 S6 Lens 5.257045460.2445247 0.80 S7 Fourth −19.346514 0.2574985 1.546 56.114 0.85 S8 Lens−13.901939 0.2232606 1.00 S9 Fifth −3.9144784 0.23 1.658 21.494 1.06 S10Lens −6.9464618 0.1659446 1.35 S11 Sixth 3.13913191 0.3975189 1.65821.494 1.58 S12 Lens 3.32803006 0.2000373 1.82 S13 Seventh 1.61309310.4732949 1.537 55.711 2.42 S14 Lens 1.25423638 0.1960642 2.50 S15Filter Infinity 0.11 1.519 64.197 2.87 S16 Infinity 0.6462859 2.90 S17Imaging Infinity 3.26 Plane

TABLE 2 K A B C D E F G H S1 −0.04225 −0.01109 0.065395 −0.355850.837547 −1.16959 0.769682 −0.2201 0 S2 −13.0186 −0.12757 0.1626430.046709 −0.90497 1.810264 −1.59507 0.519188 0 S3 −3.30037 −0.149070.316326 −0.29274 0.262465 −0.26122 0.540505 −0.3951 0 S4 0.183035−0.05422 0.124861 −0.09712 0.697622 −2.45971 4.285749 −2.46262 0 S53.251627 −0.10203 0.116345 −0.92073 3.503033 −7.16227 8.464664 −3.750660 S6 0.084295 −0.07246 −0.04296 0.296282 −1.61655 5.020739 −6.775963.949973 0 S7 5.52E−08   −0.16181 −0.04673 −0.2324 0.320309 0.2284−0.38514 0.118117 0 S8 −8E−08 −0.13136 0.049038 −0.53293 0.855096−0.48645 0.112965 −0.00835 0 S9 −0.32032 −0.12533 0.387571 −1.140511.245353 −0.47325 −0.08635 0.062731 0 S10 12.05073 −0.18017 0.24682−0.44573 0.48776 −0.26026 0.064589 −0.00603 0 S11 −50 0.143409 −0.606840.805038 −0.67425 0.326394 −0.08106 0.00802 0 S12 −34.5841 0.052766−0.28218 0.313255 −0.20774 0.080602 −0.01662 0.001402 0 S13 −0.9471−0.51052 0.211099 −0.00941 −0.02225 0.008874 −0.00159 0.000143 −5.2E−06S14 −1.00164 −0.4435 0.28223 −0.14378 0.053977 −0.01358 0.002101−0.00018 6.33E−06

Second Example

FIG. 3 is a view illustrating a second example of an optical imagingsystem, and FIG. 4 illustrates aberration curves of the optical imagingsystem of FIG. 3.

The second example of the optical imaging system includes a first lens210, a second lens 220, a third lens 230, a fourth lens 240, a fifthlens 250, a sixth lens 260, a seventh lens 270, an infrared cut-offfilter 280, an image sensor 290, and a stop (not shown) disposed betweenthe first lens 210 and the second lens 220.

The first lens 210 has a positive refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 220 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The third lens 230 has a positive refractive power, and a paraxialregion of each of an object-side surface and an image-side surfacethereof is convex.

The fourth lens 240 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fifth lens 250 has a negative refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The sixth lens 260 has a positive refractive power, and a paraxialregion of each of an object-side surface and an image-side surfacethereof is convex.

The seventh lens 270 has a negative refractive power, and a paraxialregion of each of an object-side surface and an image-side surfacethereof is concave.

One inflection point is formed on the object-side surface of the seventhlens 270. For example, the object-side surface of the seventh lens 270is concave in the paraxial region, and becomes convex toward an edgethereof.

In addition, one inflection point is formed on the image-side surface ofthe seventh lens 270. For example, the image-side surface of the seventhlens 270 is concave in the paraxial region, and becomes convex toward anedge thereof.

Although not illustrated in FIG. 3, the stop is disposed at a distanceof 0.929 mm from the object-side surface of the first lens 210 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 2 listed in Table 51 that appears later in this application.

Table 3 below shows physical properties of the lenses and other elementsof the optical imaging system of FIG. 3, and Table 4 below showsaspherical surface coefficients of the lenses of FIG. 3. Both surfacesof all of the lenses of FIG. 3 are aspherical except for the object-sidesurface of the second lens 220, which is spherical.

TABLE 3 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First2.0856092 0.9292118 1.546 56.114 1.59 S2 Lens 8.93043513 0.1200399 1.53S3 Second 5.86244103 0.23 1.669 20.353 1.43 S4 Lens 3.38051351 0.38664611.26 S5 Third 18.3857198 0.5076267 1.546 56.114 1.35 S6 Lens −65.415450.1166172 1.43 S7 Fourth 7.98746366 0.26 1.669 20.353 1.45 S8 Lens6.4766936 0.2853054 1.61 S9 Fifth 58.6668676 0.3539979 1.644 23.516 1.74S10 Lens 7.23744347 0.2316773 2.00 S11 Sixth 3.60524352 0.7682194 1.54656.114 2.24 S12 Lens −2.4011013 0.5228213 2.49 S13 Seventh −2.52410070.38 1.546 56.114 3.26 S14 Lens 3.01958733 0.107837 3.38 S15 FilterInfinity 0.11 1.519 64.197 3.66 S16 Infinity 0.69 3.69 S17 ImagingInfinity 4.00 Plane

TABLE 4 K A B C D E F G H J S1 −1.08941 0.013187 0.009962 −0.015830.018971 −0.01385 0.006018 −0.00143 0.000134 0 S2 12.57642 −0.047860.041598 −0.02674 0.011876 −0.00481 0.001502 −0.00027 1.69E−05 0 S3 0 00 0 0 0 0 0 0 0 S4 −1.83147 −0.06555 0.065057 −0.0107 −0.02653 0.029888−0.01246 0.001484 0.000416 0 S5 0 −0.02189 −0.00092 −0.021 0.023433−0.0118 −0.00341 0.005424 −0.00134 0 S6 −95 −0.0632 −0.00174 0.021978−0.05295 0.060706 −0.04155 0.015887 −0.00255 0 S7 0 −0.1339 0.057694−0.15773 0.257112 −0.23831 0.127642 −0.03688 0.004447 0 S8 0 −0.10170.077852 −0.15614 0.199503 −0.15311 0.069086 −0.01708 0.001797 0 S9 0−0.12052 0.152814 −0.15655 0.114747 −0.05967 0.019523 −0.00362 0.0002960 S10 3.458235 −0.18471 0.140789 −0.10891 0.070568 −0.03223 0.008954−0.00133 8.01E−05 0 S11 −19.5338 −0.01378 −0.01807 0.002094 0.001582−0.0008 0.00013 −2.5E−06  −6.7E−07 0 S12 −0.75818 0.09278 −0.066990.021292 −0.0052 0.001388 −0.00027  2.7E−05 −1.1E−06 0 S13 −14.2476−0.09472 −0.00377 0.015632 −0.00476 0.000702 −5.8E−05 2.53E−06 −4.7E−080 S14 −0.57988 −0.09619 0.026231 −0.00426 0.000309 8.85E−06 −3.9E−063.28E−07 −1.2E−08 1.61E−10

Third Example

FIG. 5 is a view illustrating a third example of an optical imagingsystem, and FIG. 6 illustrates aberration curves of the optical imagingsystem of FIG. 5.

The third example of the optical imaging system includes a first lens310, a second lens 320, a third lens 330, a fourth lens 340, a fifthlens 350, a sixth lens 360, a seventh lens 370, an infrared cut-offfilter 380, an image sensor 390, and a stop (not shown) disposed betweenthe second lens 320 and the third lens 330.

The first lens 310 has a positive refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 320 has a positive refractive power, and a paraxialregion of each of an object-side surface and an image-side surfacethereof is convex.

The third lens 330 has a negative refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fourth lens 340 has a positive refractive power, a paraxial regionof an object-side surface thereof is concave, and a paraxial region ofan image-side surface thereof is convex.

The fifth lens 350 has a positive refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The sixth lens 360 has a negative refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The seventh lens 370 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

Two inflection points are formed on the object-side surface of theseventh lens 370. For example, the object-side surface of the seventhlens 370 is convex in the paraxial region, becomes concave in a regionoutside the paraxial region, and becomes convex toward an edge thereof.

In addition, one inflection point is formed on the image-side surface ofthe seventh lens 370. For example, the image-side surface of the seventhlens 370 is concave in the paraxial region, and becomes convex toward anedge thereof.

Although not illustrated in FIG. 5, the stop is disposed at a distanceof 1.251 mm from the object-side surface of the first lens 310 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 3 listed in Table 51 that appears later in this application.

Table 5 below shows physical properties of the lenses and other elementsof the optical imaging system of FIG. 5, and Table 6 below showsaspherical surface coefficients of the lenses of FIG. 5. Both surfacesof all of the lenses of FIG. 5 are aspherical.

TABLE 5 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First2.097707 0.484782 1.546 56.114 1.410 S2 Lens 3.212251 0.123479 1.350 S3Second 2.895677 0.623098 1.546 56.114 1.310 S4 Lens −16.0261 0.02 1.271S5 Third 4.647233 0.2 1.679 19.236 1.157 S6 Lens 2.307581 0.603147 1.095S7 Fourth −1200 0.298374 1.679 19.236 1.270 S8 Lens −1200 0.210734 1.456S9 Fifth 3.365553 0.307211 1.546 56.114 1.712 S10 Lens 3.293292 0.2365442.000 S11 Sixth 3.258679 0.377621 1.679 19.236 2.150 S12 Lens 2.6817490.140868 2.500 S13 Seventh 1.558894 0.541106 1.537 53.955 2.871 S14 Lens1.37E+00 0.243037 3.050 S15 Filter Infinity 0.11 1.5187 64.1664 3.347466S16 Infinity 0.669948 3.379185 S17 Imaging Infinity 3.708257 Plane

TABLE 6 K A B C D E F G H J S1 −7.583 0.0707 −0.0815 0.0542 −0.04790.0209 −0.0011 −0.0013 0.0002 0 S2 −20.327 −0.0052 −0.1116 0.0603 0.0221−0.0313 0.0098 −0.0002 −0.0003 0 S3 −0.2671 −0.0365 −0.0311 −0.0159 0.08−0.0164 −0.04 0.0265 −0.0051 0 S4 0 0.0221 −0.096 0.0722 0.0909 −0.21380.1659 −0.0596 0.0083 0 S5 −4.5253 −0.0697 0.0432 −0.146 0.4306 −0.60730.4481 −0.1664 0.0247 0 S6 0.5431 −0.098 0.1133 −0.1737 0.2753 −0.30380.2109 −0.0818 0.0149 0 S7 0 −0.0194 −0.0742 0.1045 −0.1099 0.1045−0.0888 0.0459 −0.0098 0 S8 0 −0.0129 −0.0975 0.0464 0.0472 −0.07020.033 −0.0054 0 0 S9 −43.017 0.1335 −0.1604 0.0703 −0.0277 0.0168 −0.010.003 −0.0003 0 S10 −5.2037 −0.0285 0.0684 −0.1295 0.1018 −0.0463 0.0125−0.0018 0.0001 0 S11 −1.699 0.0274 −0.1873 0.1887 −0.126 0.0512 −0.01180.0014 −7E−05 0 S12 −0.0013 −0.0788 −0.0314 0.0355 −0.0206 0.0072−0.0014 0.0001 −6E−06 0 S13 −0.8015 −0.4138 0.198 −0.0635 0.0157 −0.0030.0004 −4E−05  2E−06 −5E−08 S14 −1.2781 −0.3 0.1664 −0.0696 0.021−0.0044 0.0006 −5E−05  3E−06 −5E−08

Fourth Example

FIG. 7 is a view illustrating a fourth example of an optical imagingsystem, and FIG. 8 illustrates aberration curves of the optical imagingsystem of FIG. 7.

The fourth example of the optical imaging system includes a first lens410, a second lens 420, a third lens 430, a fourth lens 440, a fifthlens 450, a sixth lens 460, a seventh lens 470, an infrared cut-offfilter 480, an image sensor 490, and a stop (not shown) disposed betweenthe second lens 420 and the third lens 430.

The first lens 410 has a positive refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 420 has a positive refractive power, a paraxial regionof an object-side surface and a paraxial region of an image-side surfacethereof is convex.

The third lens 430 has a negative refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fourth lens 440 has a negative refractive power, a paraxial regionof an object-side surface thereof is concave, and a paraxial region ofan image-side surface thereof is convex.

The fifth lens 450 has a positive refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The sixth lens 460 has a negative refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The seventh lens 470 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

Two inflection points are formed on the object-side surface of theseventh lens 470. For example, the object-side surface of the seventhlens 470 is convex in the paraxial region, becomes concave in a regionoutside the paraxial region, and becomes convex toward an edge thereof.

In addition, one inflection point is formed on the image-side surface ofthe seventh lens 470. For example, the image-side surface of the seventhlens 470 is concave in the paraxial region, and becomes convex toward anedge thereof.

Although not illustrated in FIG. 7, the stop is disposed at a distanceof 1.259 mm from the object-side surface of the first lens 410 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 4 listed in Table 51 that appears later in this application.

Table 7 below shows physical properties of the lenses and other elementsof the optical imaging system of FIG. 7, and Table 8 below showsaspherical surface coefficients of the lenses of FIG. 7. Both surfacesof all of the lenses of FIG. 7 are aspherical.

TABLE 7 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First2.102219 0.483493 1.546 56.114 1.408 S2 Lens 3.356331 0.135746 1.350 S3Second 3.090692 0.619827 1.546 56.114 1.308 S4 Lens −13.9876 0.02 1.271S5 Third 4.85529 0.2 1.679 19.236 1.157 S6 Lens 2.36693 0.559926 1.095S7 Fourth −2272.13 0.301198 1.679 19.236 1.270 S8 Lens −7278.43 0.1847851.442 S9 Fifth 3.354564 0.294607 1.546 56.114 1.646 S10 Lens 3.5201240.26038 1.947 S11 Sixth 3.472312 0.393208 1.679 19.236 2.150 S12 Lens2.735386 0.154893 2.500 S13 Seventh 1.556951 0.551842 1.537 53.955 2.749S14 Lens 1.37E+00 0.250094 2.950 S15 Filter Infinity 0.11 1.5187 64.16643.293215 S16 Infinity 0.67 3.328465 S17 Imaging Infinity 3.698823 Plane

TABLE 8 K A B C D E F G H J S1 −7.5279 0.0685 −0.0723 0.0313 −0.0131−0.0097 0.0144 −0.0054 0.0007 0 S2 −19.893 −0.0114 −0.0921 0.0405 0.0318−0.0345 0.0116 −0.001 −0.0002 0 S3 −0.0142 −0.0359 −0.0288 −0.00870.0581 0.0053 −0.0505 0.0291 −0.0054 0 S4 0 0.0225 −0.1301 0.1638−0.0413 −0.1012 0.1103 −0.0452 0.0067 0 S5 −6.2325 −0.061 −0.0037−0.0472 0.3094 −0.5229 0.4199 −0.1649 0.0257 0 S6 0.4782 −0.092 0.0962−0.1588 0.2881 −0.3518 0.2616 −0.1062 0.0192 0 S7 0 −0.0151 −0.05320.0425 0.0094 −0.0356 0.0085 0.009 −0.0039 0 S8 0 −0.0101 −0.0934 0.04970.0399 −0.0661 0.0321 −0.0053 0 0 S9 −49.08 0.1451 −0.2207 0.1683−0.1105 0.058 −0.0226 0.0051 −0.0005 0 S10 −5.4303 −0.0164 0.0172−0.0595 0.0534 −0.0275 0.0084 −0.0014 1E−04 0 S11 −1.136 0.0251 −0.18010.1935 −0.1377 0.0586 −0.014 0.0017 −9E−05  0 S12 0.0272 −0.1034 0.01663E−05 −0.0063 0.0037 −0.0009 0.0001 −5E−06  0 S13 −0.8 −0.4195 0.2062−0.0728 0.0211 −0.0048 0.0007 −8E−05 4E−06 −1E−07 S14 −1.3207 −0.29310.1671 −0.0741 0.0239 −0.0053 0.0008 −7E−05 4E−06 −8E−08

FIG. 9 is a view illustrating a fifth example of an optical imagingsystem, and FIG. 10 illustrates aberration curves of the optical imagingsystem of FIG. 9.

The fifth example of the optical imaging system includes a first lens510, a second lens 520, a third lens 530, a fourth lens 540, a fifthlens 550, a sixth lens 560, a seventh lens 570, an infrared cut-offfilter 580, an image sensor 590, and a stop (not shown) disposed betweenthe second lens 520 and the third lens 530.

The first lens 510 has a positive refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 520 has a positive refractive power, a paraxial regionof an object-side surface and a paraxial region of an image-side surfacethereof is convex.

The third lens 530 has a negative refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fourth lens 540 has a negative refractive power, a paraxial regionof an object-side surface thereof is concave, and a paraxial region ofan image-side surface thereof is convex.

The fifth lens 550 has a positive refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The sixth lens 560 has a negative refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The seventh lens 570 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

Two inflection points are formed on the object-side surface of theseventh lens 570. For example, the object-side surface of the seventhlens 570 is convex in the paraxial region, becomes concave in a regionoutside the paraxial region, and becomes convex toward an edge thereof.

In addition, one inflection point is formed on the image-side surface ofthe seventh lens 570. For example, the image-side surface of the seventhlens 570 is concave in the paraxial region, and becomes convex toward anedge thereof.

Although not illustrated in FIG. 9, the stop is disposed at a distanceof 1.169 mm from the object-side surface of the first lens 510 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 5 listed in Table 51 that appears later in this application.

Table 9 below shows physical properties of the lenses and other elementsof the optical imaging system of FIG. 9, and Table 10 below showsaspherical surface coefficients of the lenses of FIG. 9. Both surfacesof all of the lenses of FIG. 9 are aspherical.

TABLE 9 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First1.951165 0.448752 1.546 56.114 1.307 S2 Lens 3.115162 0.125992 1.253 S3Second 2.868611 0.575289 1.546 56.114 1.214 S4 Lens −12.9825 0.0185631.180 S5 Third 4.506414 0.185629 1.679 19.236 1.074 S6 Lens 2.1968550.519693 1.016 S7 Fourth −2108.87 0.279556 1.679 19.236 1.179 S8 Lens−6755.44 0.171507 1.338 S9 Fifth 3.113522 0.273438 1.546 56.114 1.528S10 Lens 3.267187 0.241671 1.808 S11 Sixth 3.22281 0.364954 1.679 19.2361.996 S12 Lens 2.538835 0.143764 2.320 S13 Seventh 1.445077 0.512191.537 53.955 2.500 S14 Lens 1.27E+00 0.250094 2.738 S15 Filter Infinity0.11 1.5187 64.1664 2.939872 S16 Infinity 0.597851 2.970893 S17 ImagingInfinity 3.250775 Plane

TABLE 10 K A B C D E F G H J S1 −7.5279 0.0857 −0.105 0.0528 −0.0256−0.0221 0.0379 −0.0166 0.0023 0 S2 −19.893 −0.0142 −0.1337 0.0682 0.0621−0.0783 0.0306 −0.0031 −0.0006 0 S3 −0.0142 −0.0449 −0.0418 −0.01470.1136 0.012 −0.1333 0.0892 −0.0193 0 S4 0 0.0281 −0.189 0.276 −0.0808−0.2297 0.2908 −0.1382 0.024 0 S5 −6.2325 −0.0763 −0.0054 −0.0795 0.6054−1.1875 1.107 −0.5047 0.0912 0 S6 0.4782 −0.115 0.1396 −0.2676 0.5637−0.7991 0.6898 −0.325 0.0682 0 S7 0 −0.0188 −0.0772 0.0717 0.0184 −0.0810.0225 0.0277 −0.0139 0 S8 0 −0.0127 −0.1356 0.0837 0.0781 −0.15020.0847 −0.0163 0 0 S9 −49.08 0.1815 −0.3205 0.2837 −0.2161 0.1317−0.0595 0.0158 −0.0017 0 S10 −5.4303 −0.0205 0.025 −0.1003 0.1046−0.0624 0.0222 −0.0043 0.0003 0 S11 −1.136 0.0314 −0.2615 0.3261 −0.26950.133 −0.0369 0.0053 −0.0003 0 S12 0.0272 −0.1293 0.0241 5E−05 −0.01230.0085 −0.0024 0.0003 −2E−05  0 S13 −0.8 −0.5247 0.2994 −0.1227 0.0414−0.0108 0.002 −0.0002 2E−05 −4E−07 S14 −1.3207 −0.3666 0.2425 −0.12480.0468 −0.0121 0.002 −0.0002 1E−05 −3E−07

Sixth Example

FIG. 11 is a view illustrating a sixth example of an optical imagingsystem, and FIG. 12 illustrates aberration curves of the optical imagingsystem of FIG. 11.

The sixth example of the optical imaging system includes a first lens610, a second lens 620, a third lens 630, a fourth lens 640, a fifthlens 650, a sixth lens 660, a seventh lens 670, an infrared cut-offfilter 680, an image sensor 690, and a stop (not shown) between thefirst lens 610 and the second lens 620.

The first lens 610 has a negative refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 620 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The third lens 630 has a negative refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fourth lens 640 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fifth lens 650 has a positive refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The sixth lens 660 has a positive refractive power, and a paraxialregion of each of an object-side surface and an image-side surfacethereof is convex.

The seventh lens 670 has a negative refractive power, and a paraxialregion of each of an object-side surface and an image-side surfacethereof is concave.

One inflection point is formed on the object-side surface of the seventhlens 670. For example, the object-side surface of the seventh lens 670is concave in the paraxial region, and becomes convex toward an edgethereof.

In addition, one inflection point is formed on the image-side surface ofthe seventh lens 670. For example, the image-side surface of the seventhlens 670 is concave in the paraxial region, and becomes convex toward anedge thereof.

Although not illustrated in FIG. 11, the stop is disposed at a distanceof 0.383 mm from the object-side surface of the first lens 610 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 6 listed in Table 51 that appears later in this application.

Table 11 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 11, and Table 12 belowshows aspherical surface coefficients of the lenses of FIG. 11. Bothsurfaces of all of the lenses of FIG. 11 are aspherical.

TABLE 11 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First2.182354 0.332873 1.546 56.114 1.380 S2 Lens 1.943873 0.05 1.369 S3Second 1.685732 0.732159 1.546 56.114 1.335 S4 Lens 28.37273 0.05 1.264S5 Third 7.153573 0.22 1.679 19.236 1.185 S6 Lens 2.922347 0.4264061.050 S7 Fourth 46.9146 0.312126 1.646 23.528 1.112 S8 Lens 17.586010.26165 1.268 S9 Fifth 2.265526 0.27 1.646 23.528 1.774 S10 Lens2.314346 0.373051 1.839 S11 Sixth 8.518581 0.607812 1.546 56.114 2.160S12 Lens −1.98711 0.378187 2.308 S13 Seventh −4.7165 0.36 1.546 56.1142.780 S14 Lens 1.89E+00 0.145735 2.998 S15 Filter Infinity 0.11 1.518764.1664 3.352752 S16 Infinity 0.67 3.384589 S17 Imaging Infinity3.712027 Plane

TABLE 12 K A B C D E F G H S1 −3.5715 0.0005 0.0011 −0.0181 0.00250.0107 −0.0084 0.0026 −0.0003 S2 −9.1496 −0.0513 −0.0055 0.0116 0.0161−0.0207 0.0078 −0.001 0 S3 −2.5622 −0.0879 0.1115 −0.1204 0.1625 −0.13250.0578 −0.0118 0.0006 S4 −90 −0.078 0.2103 −0.4384 0.6397 −0.6153 0.3736−0.1288 0.0189 S5 0 −0.1133 0.2975 −0.5447 0.7496 −0.7199 0.4525 −0.16420.0257 S6 4.6946 −0.0705 0.1434 −0.2144 0.1998 −0.0956 −0.0142 0.0399−0.0137 S7 0 −0.0972 0.1221 −0.3303 0.5457 −0.6222 0.4555 −0.1995 0.0405S8 0 −0.1596 0.2027 −0.3281 0.3412 −0.2472 0.1212 −0.0385 0.0064 S9−18.27 −0.0564 −0.0069 0.0518 −0.0566 0.0228 −0.0011 −0.0019 0.0004 S10−15.127 −0.0603 −0.0145 0.0594 −0.0601 0.0318 −0.0096 0.0015 −1E−04 S110 0.0027 −0.0398 0.025 −0.0137 0.005 −0.001 1E−04 −4E−06 S12 −1.16930.1224 −0.1006 0.0535 −0.0195 0.005 −0.0008 8E−05 −3E−06 S13 −4.4446−0.097 −0.0137 0.0358 −0.0141 0.0028 −0.0003 2E−05 −5E−07 S14 −8.7431−0.0906 0.0342 −0.009 0.0017 −0.0002 2E−05 −1E−06   3E−08

Seventh Example

FIG. 13 is a view illustrating a seventh example of an optical imagingsystem, and FIG. 14 illustrates aberration curves of the optical imagingsystem of FIG. 13.

The seventh example of the optical imaging system includes a first lens710, a second lens 720, a third lens 730, a fourth lens 740, a fifthlens 750, a sixth lens 760, a seventh lens 770, an infrared cut-offfilter 780, an image sensor 790, and a stop (not shown) between thefirst lens 710 and the second lens 720.

The first lens 710 has a negative refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 720 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The third lens 730 has a negative refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fourth lens 740 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fifth lens 750 has a positive refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The sixth lens 760 has a positive refractive power, and a paraxialregion of each of an object-side surface and an image-side surfacethereof is convex.

The seventh lens 770 has a negative refractive power, and a paraxialregion of each of an object-side surface and an image-side surfacethereof is concave.

One inflection point is formed on the object-side surface of the seventhlens 770. For example, the object-side surface of the seventh lens 770is concave in the paraxial region, and becomes convex toward an edgethereof.

In addition, one inflection point is formed on the image-side surface ofthe seventh lens 770. For example, the image-side surface of the seventhlens 770 is concave in the paraxial region, and becomes convex toward anedge thereof.

Although not illustrated in FIG. 13, the stop is disposed at a distanceof 0.380 mm from the object-side surface of the first lens 710 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 7 listed in Table 51 that appears later in this application.

Table 13 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 13, and Table 14 belowshows aspherical surface coefficients of the lenses of FIG. 13. Bothsurfaces of all of the lenses of FIG. 13 are aspherical.

TABLE 13 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First2.126745 0.330179 1.546 56.114 1.380 S2 Lens 1.930087 0.05 1.361 S3Second 1.70733 0.723075 1.546 56.114 1.320 S4 Lens 31.14657 0.05 1.253S5 Third 7.287208 0.22 1.679 19.236 1.181 S6 Lens 2.917534 0.4036261.050 S7 Fourth 24.93378 0.309841 1.646 23.528 1.114 S8 Lens 14.082680.262337 1.280 S9 Fifth 2.227419 0.27 1.646 23.528 1.596 S10 Lens2.272219 0.378005 1.837 S11 Sixth 7.947296 0.533929 1.546 56.114 2.160S12 Lens −2.09425 0.389377 2.335 S13 Seventh −5.07284 0.36 1.546 56.1142.780 S14 Lens 1.90E+00 0.139631 2.971 S15 Filter Infinity 0.11 1.518764.1664 3.33819 S16 Infinity 0.67 3.37095 S17 Imaging Infinity 3.71475Plane

TABLE 14 K A B C D E F G H S1 −3.6056 0.0008 0.0004 −0.0195 0.00220.0122 −0.0094 0.0029 −0.0004 S2 −9.0241 −0.0527 −0.0058 0.0121 0.0169−0.0217 0.0083 −0.0012 0 S3 −2.5303 −0.0892 0.1094 −0.1041 0.1324−0.0973 0.032 −0.0013 −0.0012 S4 −90 −0.0843 0.2478 −0.5308 0.7726−0.7432 0.4537 −0.1576 0.0233 S5 0 −0.1207 0.3416 −0.6498 0.8865 −0.83110.5112 −0.1829 0.0284 S6 4.7161 −0.0754 0.1654 −0.2636 0.26 −0.13590.0012 0.0367 −0.0133 S7 0 −0.0944 0.0993 −0.233 0.3005 −0.2479 0.1155−0.0309 0.0056 S8 0 −0.1562 0.1842 −0.2656 0.2135 −0.0937 0.0133 0.00250 S9 −17.253 −0.0588 −0.0044 0.0598 −0.0719 0.0333 −0.0045 −0.00150.0004 S10 −15.241 −0.0602 −0.0202 0.0729 −0.0736 0.0388 −0.0117 0.0019−0.0001 S11 0 0.0048 −0.0458 0.0293 −0.0162 0.0059 −0.0012 0.0001 −5E−06S12 −1.2097 0.1237 −0.1034 0.0572 −0.022 0.006 −0.0011 0.0001 −5E−06 S13−4.5375 −0.1113 0.0003 0.0306 −0.0132 0.0027 −0.0003  2E−05 −5E−07 S14−9.2133 −0.0932 0.0375 −0.0106 0.0021 −0.0003 3E−05 −2E−06  4E−08

Eighth Example

FIG. 15 is a view illustrating an eighth example of an optical imagingsystem, and FIG. 16 illustrates aberration curves of the optical imagingsystem of FIG. 15.

The eighth example of the optical imaging system includes a first lens810, a second lens 820, a third lens 830, a fourth lens 840, a fifthlens 850, a sixth lens 860, a seventh lens 870, an infrared cut-offfilter 880, an image sensor 890, and a stop (not shown) disposed betweenthe first lens 810 and the second lens 820.

The first lens 810 has a positive refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 820 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The third lens 830 has a negative refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fourth lens 840 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fifth lens 850 has a negative refractive power, a paraxial region ofan object-side surface thereof is concave, and a paraxial region of animage-side surface thereof is convex.

The sixth lens 860 has a positive refractive power, and a paraxialregion of each of an object-side surface and an image-side surfacethereof is convex.

The seventh lens 870 has a negative refractive power, and a paraxialregion of each of an object-side surface and an image-side surfacethereof is concave.

One inflection point is formed on the object-side surface of the seventhlens 870. For example, the object-side surface of the seventh lens 870is concave in the paraxial region, and becomes convex toward an edgethereof.

In addition, one inflection point is formed on the image-side surface ofthe seventh lens 870. For example, the image-side surface of the seventhlens 870 is concave in the paraxial region, and becomes convex toward anedge thereof.

Although not illustrated in FIG. 15, the stop is disposed at a distanceof 0.731 mm from the object-side surface of the first lens 810 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 8 listed in Table 51 that appears later in this application.

Table 15 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 15, and Table 16 belowshows aspherical surface coefficients of the lenses of FIG. 15. Bothsurfaces of all of the lenses of FIG. 15 are aspherical.

TABLE 15 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First1.732331 0.731243 1.546 56.114 1.250 S2 Lens 12.53699 0.070023 1.181 S3Second 5.589296 0.2 1.667 20.353 1.147 S4 Lens 2.573966 0.39715 1.100 S5Third 8.065523 0.384736 1.546 56.114 1.128 S6 Lens 7.836681 0.1925911.247 S7 Fourth 6.687158 0.244226 1.546 56.114 1.276 S8 Lens 30.328470.271297 1.374 S9 Fifth −3.28742 0.24968 1.667 20.353 1.481 S10 Lens−4.51593 0.138845 1.734 S11 Sixth 5.679879 0.519865 1.546 56.114 2.150S12 Lens −1.89003 0.316634 2.318 S13 Seventh −3.93255 0.3 1.546 56.1142.640 S14 Lens 1.741826 0.193709 2.747 S15 Filter Infinity 0.11 1.51864.166 3.146 S16 Infinity 0.78 3.177045639 S17 Imaging Infinity3.536356437 Plane

TABLE 16 K A B C D E F G H I S1 −0.7464 0.01386 0.03443 −0.0749 0.10292−0.0706 0.01727 0.00423 −0.0023 0 S2 36.6688 −0.0823 0.19496 −0.30670.36336 −0.323 0.19024 −0.0632 0.00855 0 S3 −1.3559 −0.1603 0.33047−0.4059 0.33245 −0.1787 0.06728 −0.0166 0.00178 0 S4 −0.4109 −0.09070.14443 0.1155 −0.7969 1.50089 −1.4406 0.72187 −0.147 0 S5 0 −0.07390.04629 −0.1203 0.11651 −0.0578 −0.0089 0.02328 −0.0057 0 S6 0 −0.09320.00341 0.05212 −0.1827 0.24566 −0.2173 0.11261 −0.0241 0 S7 25.1476−0.1235 −0.1887 0.37626 −0.554 0.67306 −0.5796 0.27819 −0.0538 0 S8 −99−9E−05 −0.3274 0.35885 −0.3195 0.34506 −0.2608 0.09954 −0.0144 0 S9−70.894 0.02055 0.04825 −0.5284 0.75832 −0.4915 0.16359 −0.0271 0.001750 S10 2.28319 0.17594 −0.3448 0.22829 −0.0716 0.01095 −0.0007  −4E−061.4E−06  0 S11 −99 0.11875 −0.2169 0.16747 −0.0871 0.02755 −0.00490.00045 −2E−05 0 S12 −3.3067 0.16436 −0.1849 0.1159 −0.049 0.01383−0.0024 0.00023 −9E−06 0 S13 −2.4772 −0.1026 −0.0482 0.07401 −0.03080.00666 −0.0008 5.5E−05 −2E−06 0 S14 −1.1028 −0.2935 0.20325 −0.11270.04574 −0.0129 0.0024 −0.0003 1.8E−05  −5E−07

Ninth Example

FIG. 17 is a view illustrating a ninth example of an optical imagingsystem, and FIG. 18 illustrates aberration curves of the optical imagingsystem of FIG. 17.

The ninth example of the optical imaging system includes a first lens910, a second lens 920, a third lens 930, a fourth lens 940, a fifthlens 950, a sixth lens 960, a seventh lens 970, an infrared cut-offfilter 980, an image sensor 990, and a stop (not shown) disposed betweenthe first lens 910 and the second lens 920.

The first lens 910 has a positive refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 920 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The third lens 930 has a negative refractive power, a paraxial region ofan object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fourth lens 940 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fifth lens 950 has a negative refractive power, a paraxial region ofan object-side surface thereof is concave, and a paraxial region of animage-side surface thereof is convex.

The sixth lens 960 has a positive refractive power, and a paraxialregion of each of an object-side surface and an image-side surfacethereof is convex.

The seventh lens 970 has a negative refractive power, and a paraxialregion of each of an object-side surface and an image-side surfacethereof is concave.

One inflection point is formed on the object-side surface of the seventhlens 970. For example, the object-side surface of the seventh lens 970is concave in the paraxial region, and becomes convex toward an edgethereof.

In addition, one inflection point is formed on the image-side surface ofthe seventh lens 970. For example, the image-side surface of the seventhlens 970 is concave in the paraxial region, and becomes convex toward anedge thereof.

Although not illustrated in FIG. 17, the stop is disposed at a distanceof 0.675 mm from the object-side surface of the first lens 910 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 9 listed in Table 51 that appears later in this application.

Table 17 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 17, and Table 18 belowshows aspherical surface coefficients of the lenses of FIG. 17. Bothsurfaces of all of the lenses of FIG. 17 are aspherical.

TABLE 17 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First1.764902 0.674474 1.546 56.114 1.275 S2 Lens 12.91258 0.094076 1.233 S3Second 5.799997 0.2 1.667 20.353 1.195 S4 Lens 2.670885 0.396272 1.100S5 Third 8.075194 0.368135 1.546 56.114 1.151 S6 Lens 7.933456 0.1752461.259 S7 Fourth 6.768021 0.255087 1.546 56.114 1.286 S8 Lens 67.286350.235809 1.380 S9 Fifth −3.06032 0.443034 1.667 20.353 1.442 S10 Lens−4.67357 0.10084 1.791 S11 Sixth 5.00074 0.64924 1.546 56.114 2.150 S12Lens −1.88916 0.317946 2.240 S13 Seventh −3.74676 0.3 1.546 56.114 2.630S14 Lens 1.773698 0.206562 2.848 S15 Filter Infinity 0.11 1.518 64.1663.145 S16 Infinity 0.78 3.175805704 S17 Imaging Infinity 3.5352 Plane

TABLE 18 K A B C D E F G H I S1 −0.7789 0.01577 0.02444 −0.0393 0.035720.00418 −0.0324 0.02216 −0.0051 0 S2 47.4413 −0.0594 0.12758 −0.19680.24142 −0.2248 0.13432 −0.0437 0.00565 0 S3 1.5303 −0.1427 0.26196−0.2575 0.0999 0.08468 −0.1268 0.0638 −0.0121 0 S4 −0.5218 −0.08930.11518 0.2315 −1.0487 1.83714 −1.7096 0.83841 −0.1681 0 S5 0 −0.06640.02668 −0.0848 0.11 −0.1037 0.05081 −0.0058 −0.0011 0 S6 0 −0.0980.02947 0.00734 −0.1441 0.24446 −0.2359 0.12222 −0.0253 0 S7 25.6375−0.1292 −0.1525 0.33124 −0.5486 0.69506 −0.5835 0.2684 −0.0499 0 S8 −990.0154 −0.3791 0.53841 −0.6761 0.71447 −0.4636 0.15574 −0.0206 0 S9−70.99 −0.0737 0.21432 −0.6477 0.78996 −0.4841 0.15649 −0.0253 0.00161 0S10 1.47842 0.11551 −0.1988 0.12135 −0.0392 0.0079 −0.0011 0.00011−5E−06 0 S11 −99 0.11202 −0.1646 0.11135 −0.0519 0.01479 −0.0024 0.0002−7E−06 0 S12 −3.0236 0.11484 −0.1161 0.06277 −0.0227 0.00551 −0.00086.7E−05 −2E−06 0 S13 −2.6326 −0.0907 −0.0446 0.06339 −0.0255 0.00537−0.0006 4.2E−05 −1E−06 0 S14 −1.0849 −0.259 0.1596 −0.0758 0.02635−0.0064 0.00104 −0.0001 6.1E−06  −2E−07

Tenth Example

FIG. 19 is a view illustrating a tenth example of an optical imagingsystem, and FIG. 20 illustrates aberration curves of the optical imagingsystem of FIG. 19.

The tenth example of the optical imaging system includes a first lens1010, a second lens 1020, a third lens 1030, a fourth lens 1040, a fifthlens 1050, a sixth lens 1060, a seventh lens 1070, an infrared cut-offfilter 1080, an image sensor 1090, and a stop (not shown) disposedbetween the first lens 1010 and the second lens 1020.

The first lens 1010 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 1020 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The third lens 1030 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fourth lens 1040 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fifth lens 1050 has a negative refractive power, a paraxial regionof an object-side surface thereof is concave, and a paraxial region ofan image-side surface thereof is convex.

The sixth lens 1060 has a positive refractive power, and a paraxialregion of each of an object-side surface and an image-side surfacethereof is convex.

The seventh lens 1070 has a negative refractive power, and a paraxialregion of each of an object-side surface and an image-side surfacethereof is concave.

One inflection point is formed on the object-side surface of the seventhlens 1070. For example, the object-side surface of the seventh lens 1070is concave in the paraxial region, and becomes convex toward an edgethereof.

In addition, one inflection point is formed on the image-side surface ofthe seventh lens 1070. For example, the image-side surface of theseventh lens 1070 is concave in the paraxial region, and becomes convextoward an edge thereof.

Although not illustrated in FIG. 19, the stop is disposed at a distanceof 0.727 mm from the object-side surface of the first lens 1010 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 10 listed in Table 51 that appears later in this application.

Table 19 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 19, and Table 20 belowshows aspherical surface coefficients of the lenses of FIG. 19. Bothsurfaces of all of the lenses of FIG. 19 are aspherical.

TABLE 19 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First1.725845 0.726326 1.546 56.114 1.310 S2 Lens 12.83315 0.055329 1.274 S3Second 5.358298 0.181707 1.667 20.353 1.218 S4 Lens 2.541322 0.4017911.100 S5 Third 8.435541 0.408349 1.546 56.114 1.131 S6 Lens 7.8745570.186858 1.245 S7 Fourth 6.705131 0.298547 1.546 56.114 1.272 S8 Lens27.19617 0.256118 1.379 S9 Fifth −3.28751 0.241636 1.667 20.353 1.449S10 Lens −4.34069 0.090002 1.647 S11 Sixth 5.401728 0.493563 1.54656.114 2.150 S12 Lens −1.72062 0.282074 2.138 S13 Seventh −3.995940.300688 1.546 56.114 2.363 S14 Lens 1.586532 0.212709 2.585 S15 FilterInfinity 0.11 1.518 64.166 2.904 S16 Infinity 0.78 2.93204801 S17Imaging Infinity 3.282195737 Plane

TABLE 20 K A B C D E F G H I S1 −0.7633 0.01527 0.01019 0.0604 −0.22580.35306 −0.2845 0.11676 −0.0196 0 S2 36.2518 −0.0857 0.28623 −0.64780.9663 −0.9184 0.52698 −0.1654 0.02147 0 S3 −2.2692 −0.1619 0.40214−0.7024 0.86766 −0.7104 0.37031 −0.1094 0.01364 0 S4 −0.5501 −0.07820.07842 0.32154 −1.2153 1.98953 −1.7497 0.81604 −0.1565 0 S5 0 −0.06370.03982 −0.1864 0.37638 −0.5082 0.40475 −0.1698 0.02998 0 S6 0 −0.0990.02 0.02036 −0.1635 0.24341 −0.2157 0.1109 −0.0238 0 S7 25.107 −0.1211−0.2111 0.49819 −0.7382 0.7709 −0.5844 0.26919 −0.0523 0 S8 −99 0.00624−0.3995 0.51975 −0.4722 0.40416 −0.2607 0.09371 −0.0133 0 S9 −69.2650.08083 −0.1563 −0.2824 0.61355 −0.4491 0.15873 −0.0272 0.00181 0 S103.04238 0.24647 −0.5089 0.39539 −0.1641 0.04036 −0.006 0.00051 −2E−05 0S11 −99 0.12569 −0.2316 0.18601 −0.0999 0.03252 −0.0059 0.00056 −2E−05 0S12 −3.663 0.14498 −0.1575 0.09504 −0.0383 0.01029 −0.0017 0.00015−6E−06 0 S13 −2.6499 −0.0877 −0.0968 0.12134 −0.0535 0.01276 −0.00170.00013 −4E−06 0 S14 −1.0624 −0.3185 0.22606 −0.1296 0.05544 −0.01670.00337 −0.0004 3.1E−05  −1E−06

Eleventh Example

FIG. 21 is a view illustrating an eleventh example of an optical imagingsystem, and FIG. 22 illustrates aberration curves of the optical imagingsystem of FIG. 21.

The eleventh example of the optical imaging system includes a first lens1110, a second lens 1120, a third lens 1130, a fourth lens 1140, a fifthlens 1150, a sixth lens 1160, a seventh lens 1170, an infrared cut-offfilter 1180, an image sensor 1190, and a stop (not shown) disposedbetween the second lens 1120 and the third lens 1130.

The first lens 1110 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 1120 has a positive refractive power, and a paraxialregion of each of an object-side surface and an image-side surfacethereof is convex.

The third lens 1130 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fourth lens 1140 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fifth lens 1150 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The sixth lens 1160 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The seventh lens 1170 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

Two inflection points are formed on the object-side surface of theseventh lens 1170. For example, the object-side surface of the seventhlens 1170 is convex in the paraxial region, becomes concave in a regionoutside the paraxial region, and becomes convex toward an edge thereof.

In addition, one inflection point is formed on the image-side surface ofthe seventh lens 1170. For example, the image-side surface of theseventh lens 1170 is concave in the paraxial region, and becomes convextoward an edge thereof.

Although not illustrated in FIG. 21, the stop is disposed at a distanceof 1.158 mm from the object-side surface of the first lens 1110 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 11 listed in Table 51 that appears later in this application.

Table 21 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 21, and Table 22 belowshows aspherical surface coefficients of the lenses of FIG. 21. Bothsurfaces of all of the lenses of FIG. 21 are aspherical.

TABLE 21 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First 2.1410.481 1.546 56.114 1.450 S2 Lens 3.251 0.110 1.350 S3 Second 3.253 0.5421.546 56.114 1.285 S4 Lens −15.773 0.025 1.232 S5 Third 8.425 0.2301.679 19.236 1.157 S6 Lens 3.514 0.625 1.095 S7 Fourth 25.986 0.2961.679 19.236 1.265 S8 Lens 15.894 0.230 1.452 S9 Fifth 3.048 0.400 1.54656.114 1.675 S10 Lens 3.616 0.290 2.092 S11 Sixth 3.762 0.400 1.67919.236 2.153 S12 Lens 2.792 0.204 2.476 S13 Seventh 1.614 0.510 1.53753.955 2.938 S14 Lens 1.326 0.196 3.102 S15 Filter Infinity 0.110 1.51864.197 3.420 S16 Infinity 0.65 3.450 S17 Imaging Infinity 3.730 Plane

TABLE 22 K A B C D E F G H J S1 −8.038 0.07067 −0.0797 0.03339 0.00722−0.0491 0.04654 −0.0186 0.00318 −0.0002 S2 −20.594 −0.0019 −0.14940.20409 −0.2922 0.37549 −0.3085 0.14861 −0.0387 0.0042 S3 −0.0908−0.0339 −0.0641 0.13679 −0.2821 0.49215 −0.4815 0.26054 −0.0746 0.00881S4 −0.4822 −0.0436 0.17605 −0.3256 0.19989 0.1916 −0.4291 0.32034−0.1141 0.01622 S5 −1.1841 −0.1073 0.25445 −0.4683 0.49912 −0.28630.05651 0.03245 −0.0229 0.00442 S6 0.87331 −0.0693 0.03569 0.20478−0.8833 1.73278 −1.9742 1.34645 −0.5106 0.08302 S7 −0.4999 −0.03140.01347 −0.2894 0.97164 −1.7181 1.79234 −1.1152 0.38365 −0.0563 S8−1E−06 −0.0273 −0.1177 0.21199 −0.2544 0.21565 −0.1264 0.04694 −0.00930.0007 S9 −41.843 0.16235 −0.3487 0.40163 −0.3105 0.13962 −0.027 −0.00380.00264 −0.0003 S10 −5.1424 0.03971 −0.1364 0.15688 −0.1229 0.06333−0.0212 0.0044 −0.0005 2.6E−05  S11 −2.1666 0.03558 −0.1809 0.19853−0.1438 0.06411 −0.0173 0.00275 −0.0002  9E−06 S12 −0.0207 −0.10430.02386 −0.0063 −0.0007 0.00066 −3E−06 −4E−05 7.3E−06 −4E−07 S13 −0.7948−0.4128 0.18634 −0.0516 0.01005 −0.0015 0.00016 −1E−05 6.2E−07 −1E−08S14 −1.3226 −0.3105 0.17125 −0.0712 0.02129 −0.0043 0.00058 −5E−052.3E−06 −5E−08

FIG. 23 is a view illustrating a twelfth example of an optical imagingsystem, and FIG. 24 illustrates aberration curves of the optical imagingsystem of FIG. 23.

The twelfth example of the optical imaging system includes a first lens1210, a second lens 1220, a third lens 1230, a fourth lens 1240, a fifthlens 1250, a sixth lens 1260, a seventh lens 1270, an infrared cut-offfilter 1280, an image sensor 1290, and a stop (not shown) disposedbetween the second lens 1220 and the third lens 1230.

The first lens 1210 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 1220 has a positive refractive power, and a paraxialregion of each of an object-side surface and an image-side surfacethereof is convex.

The third lens 1230 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fourth lens 1240 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fifth lens 1250 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The sixth lens 1260 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The seventh lens 1270 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

Two inflection points are formed on the object-side surface of theseventh lens 1270. For example, the object-side surface of the seventhlens 1270 is convex in the paraxial region, becomes concave in a regionoutside the paraxial region, and becomes convex toward an edge thereof.

In addition, one inflection point is formed on the image-side surface ofthe seventh lens 1270. For example, the image-side surface of theseventh lens 1270 is concave in the paraxial region, and becomes convextoward an edge thereof.

Although not illustrated in FIG. 23, the stop is disposed at a distanceof 1.179 mm from the object-side surface of the first lens 1210 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 12 listed in Table 51 that appears later in this application.

Table 23 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 23, and Table 24 belowshows aspherical surface coefficients of the lenses of FIG. 23. Bothsurfaces of all of the lenses of FIG. 23 are aspherical.

TABLE 23 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First2.062390847 0.549221 1.546 56.114 1.300 S2 Lens 3.115022572 0.125731.269 S3 Second 3.019782285 0.475479 1.546 56.114 1.226 S4 Lens−32.61903406 0.029007 1.169 S5 Third 12.48638448 0.23 1.679 19.236 1.128S6 Lens 3.673999557 0.508029 1.150 S7 Fourth 9.999305402 0.324897 1.54656.114 1.247 S8 Lens 11.60588517 0.351663 1.382 S9 Fifth 4.973099171 0.41.546 56.114 1.576 S10 Lens 5.409448495 0.264386 2.010 S11 Sixth4.04853641 0.458911 1.679 19.236 2.071 S12 Lens 2.957671081 0.1681732.362 S13 Seventh 1.611526435 0.546398 1.546 56.114 2.814 S14 Lens1.391737578 0.208106 3.059 S15 Filter Infinity 0.21 1.518 64.197 3.377S16 Infinity 0.65 3.436039009 S17 Imaging Infinity 3.728313758 Plane

TABLE 24 K A B C D E F G H J S1 −1 −0.0034 0.001 −0.022 0.01746 0.00663−0.0303 0.0264 −0.0098 0.00135 S2 −12.778 −0.0034 −0.0902 0.11137−0.1942 0.30069 −0.2756 0.14506 −0.0413 0.00495 S3 −1.4955 −0.03770.00139 −0.1704 0.4417 −0.5812 0.52251 −0.3089 0.10432 −0.0152 S4−7.0565 −0.0312 0.14518 −0.4736 0.81424 −0.7738 0.37673 −0.0489 −0.02950.00918 S5 13.4217 −0.0799 0.23023 −0.6049 1.06938 −1.2451 0.91384−0.3957 0.09059 −0.0083 S6 0.77813 −0.0659 0.13895 −0.4292 1.15321−2.1708 2.58523 −1.8433 0.72003 −0.1185 S7 −8.4178 −0.0602 0.03481−0.2053 0.62429 −1.1494 1.28371 −0.8624 0.32077 −0.0505 S8 6.0295−0.0644 0.00369 −0.0458 0.13429 −0.2199 0.21381 −0.1247 0.04057 −0.0056S9 −43.444 0.03061 −0.0578 −0.0157 0.11319 −0.1547 0.10757 −0.04230.00887 −0.0008 S10 −1.2731 0.0461 −0.1666 0.19559 −0.1416 0.06564−0.0198 0.00377 −0.0004  2E−05 S11 −16.612 0.10295 −0.2048 0.17348−0.0998 0.03718 −0.0087 0.00121  −9E−05  3E−06 S12 0.05606 −0.0584−0.0221 0.02001 −0.0094 0.00248 −0.0003 7.8E−06 2.5E−06 −2E−07 S13−0.814 −0.3511 0.11636 −0.009 −0.006 0.00231 −0.0004 3.8E−05  −2E−064.1E−08  S14 −1.3896 −0.2618 0.12675 −0.0454 0.01236 −0.0024 0.00032 −3E−05 1.3E−06 −3E−08

Thirteenth Example

FIG. 25 is a view illustrating a thirteenth example of an opticalimaging system, and FIG. 26 illustrates aberration curves of the opticalimaging system of FIG. 25.

The thirteenth example of the optical imaging system includes a firstlens 1310, a second lens 1320, a third lens 1330, a fourth lens 1340, afifth lens 1350, a sixth lens 1360, a seventh lens 1370, an infraredcut-off filter 1380, an image sensor 1390, and a stop (not shown)disposed between the first lens 1310 and the second lens 1320.

The first lens 1310 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 1320 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The third lens 1330 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fourth lens 1340 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fifth lens 1350 has a positive refractive power, a paraxial regionof an object-side surface thereof is concave, and a paraxial region ofan image-side surface thereof is convex.

The sixth lens 1360 has a positive refractive power, and a paraxialregion of each of an object-side surface and an image-side surfacethereof is convex.

The seventh lens 1370 has a negative refractive power, and a paraxialregion of each of an object-side surface and an image-side surfacethereof is concave.

Two inflection points are formed on the object-side surface of theseventh lens 1370. For example, the object-side surface of the seventhlens 1370 is concave in the paraxial region, becomes convex in a regionoutside the paraxial region, and becomes concave toward an edge thereof.

In addition, two inflection points are formed on the image-side surfaceof the seventh lens 1370. For example, the image-side surface of theseventh lens 1370 is concave in the paraxial region, becomes convex in aregion outside the paraxial region, and becomes concave toward an edgethereof.

Although not illustrated in FIG. 25, the stop is disposed at a distanceof 0.705 mm from the object-side surface of the first lens 1310 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 13 listed in Table 51 that appears later in this application.

Table 25 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 25, and Table 26 belowshows aspherical surface coefficients of the lenses of FIG. 25. Bothsurfaces of all of the lenses of FIG. 25 are aspherical.

TABLE 25 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First1.782893 0.704778 1.5441 56.1138 1.230 S2 Lens 10.92187 0.1 1.159 S3Second 7.583649 0.22 1.6612 20.3532 1.147 S4 Lens 3.033178 0.30485 1.100S5 Third 6.242392 0.451648 1.5441 56.1138 1.142 S6 Lens 14.505420.217837 1.244 S7 Fourth 10.85441 0.292985 1.5441 56.1138 1.258 S8 Lens21.62499 0.244924 1.396 S9 Fifth −3.38391 0.281835 1.6612 20.3532 1.508S10 Lens −2.86511 0.1 1.774 S11 Sixth 33.58577 0.586991 1.5441 56.11382.150 S12 Lens −2.16115 0.361746 2.417 S13 Seventh −5.18033 0.32 1.544156.1138 2.686 S14 Lens 1.65E+00 0.152408 2.872 S15 Filter Infinity 0.111.5183 64.1664 3.187637061 S16 Infinity 0.65 3.220023389 S17 ImagingInfinity 3.5352 Plane

TABLE 26 K A B C D E F G H I S1 −0.8428 0.0071 0.0769 −0.2159 0.3706−0.3764 0.2225 −0.0702 0.0089 0 S2 23.94 −0.035 0.0369 −0.0159 0.0011−0.0217 0.0338 −0.0183 0.0032 0 S3 −0.7299 −0.0968 0.1436 −0.1236 0.0758−0.038 0.0258 −0.0134 0.0026 0 S4 −0.805 −0.0567 0.0037 0.4377 −1.29851.9916 −1.7112 0.7871 −0.15 0 S5 0 −0.0594 0.0805 −0.3116 0.5862 −0.68880.4848 −0.1847 0.0297 0 S6 0 −0.0796 0.0492 −0.1363 0.1557 −0.13540.0658 −0.0101 −0.0017 0 S7 53.254 −0.1627 −0.0904 0.3621 −0.7622 0.921−0.6509 0.2496 −0.0398 0 S8 −99 −0.0906 −0.2132 0.4899 −0.7712 0.8152−0.4991 0.1581 −0.0199 0 S9 −62.683 −0.0674 0.1744 −0.4494 0.5071−0.2897 0.0856 −0.0121 0.0006 0 S10 −0.2348 0.1907 −0.2275 0.1051−0.0154 −0.003 0.0013 −0.0001  6E−06 0 S11 −99 0.1619 −0.2076 0.1398−0.0674 0.0202 −0.0034 0.0003 −1E−05 0 S12 −4.0611 0.1384 −0.1115 0.0543−0.0188 0.0044 −0.0006 5E−05 −2E−06 0 S13 −1.1327 −0.0936 −0.0532 0.0697−0.0272 0.0056 −0.0007 4E−05 −1E−06 0 S14 −1.172 −0.2591 0.154 −0.07380.0266 −0.0067 0.0011 −0.0001  7E−06 −2E−07

Fourteenth Example

FIG. 27 is a view illustrating a fourteenth example of an opticalimaging system, and FIG. 28 illustrates aberration curves of the opticalimaging system of FIG. 27.

The fourteenth example of the optical imaging system includes a firstlens 1410, a second lens 1420, a third lens 1430, a fourth lens 1440, afifth lens 1450, a sixth lens 1460, a seventh lens 1470, an infraredcut-off filter 1480, an image sensor 1490, and a stop (not shown)disposed in front of the first lens 1410.

The first lens 1410 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 1420 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The third lens 1430 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fourth lens 1440 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fifth lens 1450 has a negative refractive power, a paraxial regionof an object-side surface thereof is concave, and a paraxial region ofan image-side surface thereof is convex.

The sixth lens 1460 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The seventh lens 1470 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

One inflection point is formed on the object-side surface of the seventhlens 1470. For example, the object-side surface of the seventh lens 1470is convex in the paraxial region, and becomes concave toward an edgethereof.

In addition, one inflection point is formed on the image-side surface ofthe seventh lens 1470. For example, the image-side surface of theseventh lens 1470 is concave in the paraxial region, and becomes convextoward an edge thereof.

Although not illustrated in FIG. 27, the stop is disposed at a distanceof 0.250 mm from the object-side surface of the first lens 1410 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 14 listed in Table 51 that appears later in this application.

Table 27 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 27, and Table 28 belowshows aspherical surface coefficients of the lenses of FIG. 27. Bothsurfaces of all of the lenses of FIG. 27 are aspherical.

TABLE 27 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First1.721083 0.634874 1.5441 56.1138 1.100 S2 Lens 11.45706 0.121172 1.071S3 Second 119.1721 0.203286 1.6612 20.3532 1.057 S4 Lens 4.4757870.084345 1.043 S5 Third 4.525763 0.310946 1.5441 56.1138 1.051 S6 Lens20.60825 0.215768 1.015 S7 Fourth 13.21519 0.236935 1.5441 56.1138 1.019S8 Lens 16.27332 0.210349 1.070 S9 Fifth −6.57315 0.41188 1.651 21.49421.076 S10 Lens −10.4553 0.371031 1.320 S11 Sixth 3.477886 0.6317751.5441 56.1138 1.556 S12 Lens 3.199354 0.267164 2.337 S13 Seventh2.880384 0.505977 1.5441 56.1138 2.489 S14 Lens 1.71E+00 0.138438 2.666S15 Filter Infinity 0.21 1.5182 64.1973 3.102058013 S16 Infinity 0.593.177033741 S17 Imaging Infinity 3.529142415 Plane

TABLE 28 K A B C D E F G H S1 0.0432 −0.0088 0.0131 −0.0627 0.1199−0.1345 0.077 −0.018 −0.0004 S2 −26.097 −0.0562 0.051 −0.0514 0.0595−0.0683 0.0462 −0.0139 −7E−05  S3 −99 −0.1283 0.1953 −0.2779 0.5135−0.8812 0.9662 −0.5723 0.1395 S4 −16.567 −0.0971 0.1552 −0.3608 0.985−2.059 2.5647 −1.6683 0.4378 S5 −1.6774 −0.0377 0.065 −0.4515 1.687−3.5163 4.2391 −2.6607 0.6752 S6 57.913 −0.0559 0.0533 −0.341 1.3373−2.8539 3.4811 −2.2114 0.5781 S7 −66.305 −0.1749 −0.0635 0.0963 −0.20610.5819 −0.9 0.6874 −0.1979 S8 19.549 −0.1228 −0.0686 0.0207 0.1647−0.2695 0.1725 −0.0616 0.0161 S9 29.709 −0.0709 0.0826 −0.3062 0.6009−0.6459 0.3344 −0.0761 0 S10 −31.338 −0.1255 0.1076 −0.1494 0.1908−0.1423 0.0506 −0.0065 0 S11 −46.453 0.0038 −0.1455 0.1534 −0.126 0.0705−0.0225 0.0029 0 S12 −31.504 0.0093 −0.0326 0.0149 −0.0033 0.0003 −1E−05−7E−07 0 S13 −0.5233 −0.2947 0.1709 −0.0627 0.0154 −0.0025 0.0003 −1E−053E−07 S14 −0.8257 −0.2584 0.1353 −0.0565 0.0166 −0.0032 0.0004 −3E−057E−07

Fifteenth Example

FIG. 29 is a view illustrating a fifteenth example of an optical imagingsystem, and FIG. 30 illustrates aberration curves of the optical imagingsystem of FIG. 29.

The fifteenth example of the optical imaging system includes a firstlens 1510, a second lens 1520, a third lens 1530, a fourth lens 1540, afifth lens 1550, a sixth lens 1560, a seventh lens 1570, an infraredcut-off filter 1580, an image sensor 1590, and a stop (not shown)disposed between the first lens 1510 and the second lens 1520.

The first lens 1510 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 1520 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The third lens 1530 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fourth lens 1540 has a positive refractive power, and a paraxialregion of each of an object-side surface and an image-side surfacethereof is convex.

The fifth lens 1550 has a negative refractive power, a paraxial regionof an object-side surface thereof is concave, and a paraxial region ofan image-side surface thereof is convex.

The sixth lens 1560 has a positive refractive power, and a paraxialregion of each of an object-side surface and an image-side surfacethereof is convex.

The seventh lens 1570 has a negative refractive power, and a paraxialregion of each of an object-side surface and an image-side surfacethereof is concave.

One inflection point is formed on the object-side surface of the seventhlens 1570. For example, the object-side surface of the seventh lens 1570is concave in the paraxial region, and becomes convex toward an edgethereof.

In addition, one inflection point is formed on the image-side surface ofthe seventh lens 1570. For example, the image-side surface of theseventh lens 1570 is concave in the paraxial region, and becomes convextoward an edge thereof.

Although not illustrated in FIG. 29, the stop is disposed at a distanceof 0.624 mm from the object-side surface of the first lens 1510 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 15 listed in Table 51 that appears later in this application.

Table 29 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 29, and Table 30 belowshows aspherical surface coefficients of the lenses of FIG. 29. Bothsurfaces of all of the lenses of FIG. 29 are aspherical.

TABLE 29 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First1.777275 0.623828 1.5441 56.1138 1.217 S2 Lens 6.456568 0.1 1.158 S3Second 4.41033 0.236253 1.6612 20.3532 1.157 S4 Lens 2.658351 0.4137851.184 S5 Third 6.587882 0.464049 1.5441 56.1138 1.177 S6 Lens 10.523280.17773 1.282 S7 Fourth 13.47488 0.362661 1.5441 56.1138 1.306 S8 Lens−20.23 0.232536 1.444 S9 Fifth −3.18309 0.2 1.6612 20.3532 1.456 S10Lens −4.21505 0.1 1.625 S11 Sixth 6.764633 0.608917 1.5441 56.1138 2.207S12 Lens −2.87919 0.421093 2.145 S13 Seventh −6.99582 0.32 1.544156.1138 2.280 S14 Lens 1.69E+00 0.14847 3.165 S15 Filter Infinity 0.111.5183 64.1664 2.850141022 S16 Infinity 0.680678 2.888122651 S17 ImagingInfinity 3.276451571 Plane

TABLE 30 K A B C D E F G H I S1 −0.5383 0.0108 0.0209 −0.0477 0.0729−0.06 0.0243 −0.0027 −0.0007 0 S2 5.8135 −0.0459 0.0189 0.0248 −0.05590.0486 −0.026 0.0094 −0.0019 0 S3 −10.011 −0.085 0.066 0.02 −0.08080.0756 −0.0332 0.0069 −0.0006 0 S4 −0.1875 −0.0544 0.0068 0.26 −0.66550.9329 −0.7519 0.3313 −0.061  0 S5 0 −0.0569 0.0063 −0.0275 −0.00460.0401 −0.0485 0.0264 −0.0053 0 S6 0 −0.0775 −0.0976 0.271 −0.53290.5567 −0.3323 0.1128 −0.0176 0 S7 47.015 −0.0863 −0.1024 0.2298 −0.27210.1091 0.0392 −0.0378  0.0065 0 S8 −99 −0.0603 −0.0348 0.057 −0.04680.0241 −0.007 0.001 −6E−05 0 S9 −99 −0.2672 0.6153 −0.9745 0.9138−0.5236 0.1786 −0.0332  0.0026 0 S10 −0.0701 0.0268 −0.0377 −0.02530.035 −0.0133 0.0024 −0.0002  7E−06 0 S11 −97.721 0.1556 −0.2109 0.1424−0.0678 0.02 −0.0033 0.0003 −1E−05 0 S12 −1.5998 0.2298 −0.1811 0.0905−0.0342 0.0088 −0.0014 0.0001 −4E−06 0 S13 4.8341 −0.1142 −0.0024 0.0306−0.013 0.0027 −0.0003  2E−05 −5E−07 0 S14 −1.0993 −0.2618 0.1449 −0.05990.0171 −0.0032 0.0004 −3E−05  1E−06 −2E−08

Sixteenth Example

FIG. 31 is a view illustrating a sixteenth example of an optical imagingsystem, and FIG. 32 illustrates aberration curves of the optical imagingsystem of FIG. 31.

The sixteenth example of the optical imaging system includes a firstlens 1610, a second lens 1620, a third lens 1630, a fourth lens 1640, afifth lens 1650, a sixth lens 1660, a seventh lens 1670, an infraredcut-off filter 1680, an image sensor 1690, and a stop (not shown)disposed between the first lens 1610 and the second lens 1620.

The first lens 1610 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 1620 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The third lens 1630 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fourth lens 1640 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fifth lens 1650 has a positive refractive power, a paraxial regionof an object-side surface thereof is concave, and a paraxial region ofan image-side surface thereof is convex.

The sixth lens 1660 has a positive refractive power, and a paraxialregion of each of an object-side surface and an image-side surfacethereof is convex.

The seventh lens 1670 has a negative refractive power, and a paraxialregion of each of an object-side surface and an image-side surfacethereof is concave.

No inflection point is formed on the object-side surface of the seventhlens 1670.

In addition, one inflection point is formed on the image-side surface ofthe seventh lens 1670. For example, the image-side surface of theseventh lens 1670 is concave in the paraxial region, and becomes convextoward an edge thereof.

Although not illustrated in FIG. 31, the stop is disposed at a distanceof 0.641 mm from the object-side surface of the first lens 1610 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 16 listed in Table 51 that appears later in this application.

Table 31 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 31, and Table 32 belowshows aspherical surface coefficients of the lenses of FIG. 31. Bothsurfaces of all of the lenses of FIG. 31 are aspherical.

TABLE 31 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First1.797739 0.640884 1.5441 56.1138 1.270 S2 Lens 3.742203 0.119077 1.211S3 Second 3.057321 0.22 1.6612 20.3532 1.190 S4 Lens 2.795092 0.3930791.130 S5 Third 10.62153 0.464034 1.5441 56.1138 1.153 S6 Lens 9.0265620.1 1.289 S7 Fourth 7.987624 0.36214 1.5441 56.1138 1.328 S8 Lens138.7678 0.233384 1.454 S9 Fifth −4.1765 0.219829 1.6612 20.3532 1.518S10 Lens −4.13945 0.1 1.656 S11 Sixth 4.613403 0.608917 1.5441 56.11382.000 S12 Lens −3.59211 0.472598 2.038 S13 Seventh −7.00157 0.32 1.544156.1138 2.049 S14 Lens 1.69E+00 0.110689 2.685 S15 Filter Infinity 0.211.5183 64.1664 2.941536401 S16 Infinity 0.5499877 3.008025404 S17Imaging Infinity 3.291609937 Plane

TABLE 32 K A B C D E F G H I S1 −0.812 0.0136 0.0311 −0.0769 0.1226−0.1099 0.0531 −0.0116 0.0005 0 S2 −6.6917 −0.0631 0.0174 0.0714 −0.16480.1763 −0.1086 0.0376 −0.0059 0 S3 −14.579 −0.0707 0.0068 0.1319 −0.21290.173 −0.0715 0.0127 −0.0005 0 S4 −0.188 −0.0614 −0.0138 0.3338 −0.73920.9251 −0.6781 0.276 −0.0477 0 S5 0 −0.0572 0.0435 −0.1733 0.2724−0.2421 0.0931 −0.0042 −0.0038 0 S6 0 −0.1356 −0.0309 0.2183 −0.55470.6931 −0.486 0.1856 −0.0304 0 S7 30.023 −0.2107 0.0007 0.1568 −0.28540.2586 −0.1154 0.0236 −0.0019 0 S8 −99 −0.1858 −0.0192 0.2616 −0.41110.3392 −0.1538 0.0357 −0.0033 0 S9 −98.995 −0.2935 0.5043 −0.5157 0.2657−0.0658 0.0056 0.0005 −8E−05 0 S10 −0.0701 −0.0775 0.2223 −0.2703 0.1529−0.0452 0.0073 −0.0006  2E−05 0 S11 −97.878 0.1479 −0.1956 0.1288−0.0598 0.0172 −0.0028 0.0002 −8E−06 0 S12 1.4166 0.1234 −0.1416 0.087−0.0341 0.0088 −0.0014 0.0001 −4E−06 0 S13 9.5503 −0.2864 0.1096 0.0149−0.0214 0.0064 −0.0009  6E−05 −2E−06 0 S14 −1.2786 −0.3076 0.1777−0.0626 0.0143 −0.0022 0.0002 −1E−05  5E−07 −7E−09

Seventeenth Example

FIG. 33 is a view illustrating a seventeenth example of an opticalimaging system, and FIG. 34 illustrates aberration curves of the opticalimaging system of FIG. 33.

The sixteenth example of the optical imaging system includes a firstlens 1710, a second lens 1720, a third lens 1730, a fourth lens 1740, afifth lens 1750, a sixth lens 1760, a seventh lens 1770, an infraredcut-off filter 1780, an image sensor 1790, and a stop (not shown)disposed between the second lens 1720 and the third lens 1730.

The first lens 1710 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 1720 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The third lens 1730 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fourth lens 1740 has a positive refractive power, and a paraxialregion of each of an object-side surface and an image-side surfacethereof is convex.

The fifth lens 1750 has a negative refractive power, a paraxial regionof an object-side surface thereof is concave, and a paraxial region ofan image-side surface thereof is convex.

The sixth lens 1760 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The seventh lens 1770 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

One inflection point is formed on the object-side surface of the seventhlens 1770. For example, the object-side surface of the seventh lens 1770is convex in the paraxial region, and becomes concave toward an edgethereof.

In addition, one inflection point is formed on the image-side surface ofthe seventh lens 1770. For example, the image-side surface of theseventh lens 1770 is concave in the paraxial region, and becomes convextoward an edge thereof.

Although not illustrated in FIG. 33, the stop is disposed at a distanceof 0.680 mm from the object-side surface of the first lens 1710 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 17 listed in Table 51 that appears later in this application.

Table 33 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 33, and Table 34 belowshows aspherical surface coefficients of the lenses of FIG. 33. Bothsurfaces of all of the lenses of FIG. 33 are aspherical.

TABLE 33 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First 1.511370.4703 1.55 56.11 1.07 S2 Lens 6.09608 0.02 1.05 S3 Second 1.757180.18945 1.66 20.40 0.99 S4 Lens 1.293606 0.387098 0.91 S5 Third 3.5767370.1 1.66 20.40 0.90 S6 Lens 3.332348 0.200572 0.93 S7 Fourth 8.9505240.639932 1.55 56.11 1.08 S8 Lens −56.3031 0.349136 1.27 S9 Fifth−8.77353 0.14904 1.65 21.49 1.33 S10 Lens −11.1487 0.057519 1.57 S11Sixth 4.015255 0.553938 1.65 21.49 1.60 S12 Lens 3.782446 0.245098 2.00S13 Seventh 1.919931 0.511414 1.54 55.71 2.82 S14 Lens 1.453313 0.1828682.58 S15 Filter Infinity 0.11 1.52 64.20 2.89 S16 Infinity 0.532304 2.93S17 Imaging Infinity 3.26 Plane

TABLE 34 K A B C D E F G H I S1 −0.0872 0.0085 0.0157 −0.0318 0.0507−0.0457 0.0214 −0.0042 0 0 S2 25.924 −0.1035 0.4079 −0.9853 1.3538−1.1103 0.5053 −0.1003 0 0 S3 −2.0252 −0.1329 0.5024 −1.13 1.5305 −1.2180.5394 −0.1043 0 0 S4 −0.1481 −0.094 0.1762 −0.1747 −0.0182 0.4162−0.4298 0.1625 0 0 S5 0.829 −0.1421 0.1795 −0.2535 0.4392 −0.4879 0.3327−0.0954 0 0 S6 6.8952 −0.1777 0.1545 −0.1149 0.1034 −0.051 0.0095−0.0002 0 0 S7 21.918 −0.0605 0.0485 −0.0459 0.0715 −0.0485 0.0135−0.0013 0 0 S8 25.736 −0.0682 0.0239 −0.012 0.0083 −0.0027 0.0004 −2E−050 0 S9 1.6857 −0.1292 0.2433 −0.407 0.387 −0.2241 0.0741 −0.011 0 0 S1043.884 −0.107 0.1148 −0.1454 0.095 −0.0303 0.0045 −0.0003 0 0 S11−52.836 0.0701 −0.2199 0.2058 −0.1343 0.0526 −0.0106 0.0009 0 0 S12 0−0.0577 −0.027 0.0237 −0.0104 0.0019 0.0002 −0.0001 2E−05 −6E−07 S13−0.9427 −0.3217 0.0977 −0.0029 −0.0058 0.0017 −0.0002  2E−05 −4E−07  0S14 −1.0048 −0.2798 0.1282 −0.0461 0.0122 −0.0022 0.0002 −1E−05 4E−07 0

Eighteenth Example

FIG. 35 is a view illustrating an eighteenth example of an opticalimaging system, and FIG. 36 illustrates aberration curves of the opticalimaging system of FIG. 35.

The eighteenth example of the optical imaging system includes a firstlens 1810, a second lens 1820, a third lens 1830, a fourth lens 1840, afifth lens 1850, a sixth lens 1860, a seventh lens 1870, an infraredcut-off filter 1880, an image sensor 1890, and a stop (not shown)disposed between the second lens 1820 and the third lens 1830.

The first lens 1810 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 1820 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The third lens 1830 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fourth lens 1840 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fifth lens 1850 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The sixth lens 1860 has a positive refractive power, and a paraxialregion of each of an object-side surface and an image-side surfacethereof is convex.

The seventh lens 1870 has a negative refractive power, and a paraxialregion of each of an object-side surface and an image-side surfacethereof is concave.

One inflection point is formed on the object-side surface of the seventhlens 1870. For example, the object-side surface of the seventh lens 1870is concave in the paraxial region, and becomes convex toward an edgethereof.

In addition, one inflection point is formed on the image-side surface ofthe seventh lens 1870. For example, the image-side surface of theseventh lens 1870 is concave in the paraxial region, and becomes convextoward an edge thereof.

Although not illustrated in FIG. 35, the stop is disposed at a distanceof 1.002 mm from the object-side surface of the first lens 1810 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 18 listed in Table 51 that appears later in this application.

Table 35 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 35, and Table 36 belowshows aspherical surface coefficients of the lenses of FIG. 35. Bothsurfaces of all of the lenses of FIG. 35 are aspherical.

TABLE 35 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First1.804711 0.576863 1.544 56.114 1.270 S2 Lens 5.010949 0.040641 1.230 S3Second 4.809505 0.35454 1.544 56.114 1.204 S4 Lens 14.18784 0.03 1.158S5 Third 3.659167 0.2 1.661 20.350 1.087 S6 Lens 2.148667 0.424854 1.050S7 Fourth 21.5791 0.365358 1.544 56.114 1.050 S8 Lens 9.699008 0.0618821.187 S9 Fifth 6.23061 0.282527 1.639 21.525 1.212 S10 Lens 8.4969660.34789 1.367 S11 Sixth 10.18469 0.58471 1.544 56.114 1.650 S12 Lens−1.51715 0.356227 1.934 S13 Seventh −2.7118 0.3 1.544 56.114 2.303 S14Lens 2.063638 0.164562 2.650 S15 Filter Infinity 0.21 1.518 64.197 2.938S16 Infinity 0.639942 2.969 S17 Imaging Infinity 3.261 Plane

TABLE 36 K A B C D E F G H S1 −1.5984 0.02201 0.00112 −0.0095 0.00713−0.0076 0.00279 −0.0002 0 S2 0 −0.0267 −0.08 0.12037 −0.1085 0.07767−0.0361 0.00741 0 S3 0 0.01852 −0.0944 0.1151 −0.0877 0.07128 −0.04330.01041 0 S4 93.0315 −0.0833 0.30018 −0.6564 0.78727 −0.5697 0.2292−0.0392 0 S5 −11.518 −0.2115 0.48742 −0.8074 0.95087 −0.7204 0.32387−0.0644 0 S6 −4.4222 −0.0999 0.19853 −0.0999 −0.0975 0.27732 −0.22460.0743 0 S7 0 −0.0315 −0.1501 0.44969 −1.0958 1.44445 −1.0093 0.2957 0S8 0 −0.1532 −0.084 0.36754 −0.5986 0.47504 −0.1986 0.03659 0 S9 −76.367−0.2472 −0.1038 0.53081 −0.6528 0.42248 −0.1503 0.02265 0 S10 0 −0.1927−0.1015 0.31685 −0.3163 0.19124 −0.0703 0.01153 0 S11 0 0.02452 −0.0539−0.0674 0.10823 −0.0625 0.01679 −0.0017 0 S12 −1.5099 0.20226 −0.14510.00041 0.04309 −0.0194 0.00346 −0.0002 0 S13 −6.0002 0.00897 −0.19140.15961 −0.0593 0.01227 −0.0015 9.7E−05  −3E−06 S14 −0.8696 −0.19010.07654 −0.0229 0.00487 −0.0008 8.7E−05  −6E−06 2.5E−07

Nineteenth Example

FIG. 37 is a view illustrating a nineteenth example of an opticalimaging system, and FIG. 38 illustrates aberration curves of the opticalimaging system of FIG. 37.

The nineteenth example of the optical imaging system includes a firstlens 1910, a second lens 1920, a third lens 1930, a fourth lens 1940, afifth lens 1950, a sixth lens 1960, a seventh lens 1970, an infraredcut-off filter 1980, an image sensor 1990, and a stop (not shown)disposed between the first lens 1910 and the second lens 1920.

The first lens 1910 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 1920 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The third lens 1930 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fourth lens 1940 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fifth lens 1950 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The sixth lens 1960 has a positive refractive power, and a paraxialregion of each of an object-side surface and an image-side surfacethereof is convex.

The seventh lens 1970 has a negative refractive power, and a paraxialregion of each of an object-side surface and an image-side surfacethereof is concave.

One inflection point is formed on the object-side surface of the seventhlens 1970. For example, the object-side surface of the seventh lens 1970is concave in the paraxial region, and becomes convex toward an edgethereof.

In addition, two inflection points are formed on the image-side surfaceof the seventh lens 1970. For example, the image-side surface of theseventh lens 1970 is concave in the paraxial region, becomes convex in aregion outside the paraxial region, and becomes concave toward an edgethereof.

Although not illustrated in FIG. 37, the stop is disposed at a distanceof 0.920 mm from the object-side surface of the first lens 1910 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 19 listed in Table 51 that appears later in this application.

Table 37 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 37, and Table 38 belowshows aspherical surface coefficients of the lenses of FIG. 37. Bothsurfaces of all of the lenses of FIG. 37 are aspherical.

TABLE 37 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First1.970126 0.92 1.546 56.114 1.435 S2 Lens 6.142172 0.076242 1.327 S3Second 5.374346 0.2 1.677 19.238 1.311 S4 Lens 3.547167 0.347957 1.231S5 Third 10.07708 0.376365 1.546 56.114 1.271 S6 Lens 25.51868 0.1640041.351 S7 Fourth 5.892425 0.2 1.667 20.377 1.359 S8 Lens 4.6146840.254739 1.460 S9 Fifth 5.094005 0.229485 1.619 25.960 1.756 S10 Lens4.38587 0.340204 1.654 S11 Sixth 4.999874 0.771398 1.546 56.11379 2.420S12 Lens −1.87386 0.389605 2.467 S13 Seventh −2.11718 0.3 1.546 56.113793.169 S14 Lens 2.83E+00 0.18 3.066 S15 Filter Infinity 0.21 1.51827264.19733 3.714867 S16 Infinity 0.64 3.800723 S17 Imaging Infinity4.253557 Plane

TABLE 38 K A B C D E F G H J S1 −1.1385 0.01411 0.02295 −0.0501 0.07134−0.0603 0.02979 −0.0079 0.00085 0 S2 12.6728 −0.0899 0.07918 −0.0381−0.0163 0.03432 −0.0229 0.00765 −0.0011 0 S3 9.9647 −0.1473 0.111760.0661 −0.2646 0.2998 −0.1775 0.05556 −0.0072 0 S4 −0.5888 −0.0760.06764 0.06018 −0.1804 0.16978 −0.0679 0.00574 0.00246 0 S5 0 −0.02780.04242 −0.1578 0.27763 −0.3017 0.1871 −0.0609 0.0081 0 S6 −99 −0.05050.03441 −0.0587 0.04282 0.00164 −0.0357 0.02532 −0.0056 0 S7 0 −0.1380.00961 0.05794 −0.2108 0.32353 −0.2566 0.10091 −0.0155 0 S8 0 −0.13630.10009 −0.1765 0.20747 −0.1546 0.07102 −0.0193 0.00247 0 S9 0 −0.21130.22879 −0.2271 0.16311 −0.0851 0.03083 −0.0071 0.00076 0 S10 −62.082−0.1439 0.05554 −0.0007 −0.029 0.0245 −0.009 0.00158 −0.0001 0 S11−21.515 0.00471 −0.0144 0.00292 −0.0019 0.00064 −8E−05 1.3E−06 1.8E−07  0 S12 −3.7544 0.10351 −0.0491 0.01247 −0.0024 0.00034 −2E−05  −3E−079E−08 0 S13 −11.142 −0.0315 −0.0345 0.02395 −0.0062 0.00086 −7E−052.9E−06 −5E−08  0 S14 −1.2542 −0.091 0.02499 −0.0054 0.00089 −0.00011.3E−05   −1E−06 6E−08 −1E−09

Twentieth Example

FIG. 39 is a view illustrating a twentieth example of an optical imagingsystem, and FIG. 40 illustrates aberration curves of the optical imagingsystem of FIG. 39.

The twentieth example of the optical imaging system includes a firstlens 2010, a second lens 2020, a third lens 2030, a fourth lens 2040, afifth lens 2050, a sixth lens 2060, a seventh lens 2070, an infraredcut-off filter 2080, an image sensor 2090, and a stop (not shown)disposed between the second lens 2020 and the third lens 2030.

The first lens 2010 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 2020 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The third lens 2030 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fourth lens 2040 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fifth lens 2050 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The sixth lens 2060 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The seventh lens 2070 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

Two inflection points are formed on the object-side surface of theseventh lens 2070. For example, the object-side surface of the seventhlens 2070 is convex in the paraxial region, becomes concave in a regionoutside the paraxial region, and becomes convex toward an edge thereof.

In addition, one inflection point is formed on the image-side surface ofthe seventh lens 2070. For example, the image-side surface of theseventh lens 2070 is concave in the paraxial region, and becomes convextoward an edge thereof.

Although not illustrated in FIG. 39, the stop is disposed at a distanceof 1.128 mm from the object-side surface of the first lens 2010 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 20 listed in Table 51 that appears later in this application.

Table 39 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 39, and Table 40 belowshows aspherical surface coefficients of the lenses of FIG. 39. Bothsurfaces of all of the lenses of FIG. 39 are aspherical.

TABLE 39 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First 2.1380.461 1.546 56.114 1.360 S2 Lens 2.721 0.042 1.346 S3 Second 2.772 0.6001.546 56.114 1.322 S4 Lens 33.838 0.025 1.253 S5 Third 5.906 0.230 1.67919.236 1.199 S6 Lens 2.958 0.315 1.193 S7 Fourth 6.706 0.516 1.54656.114 1.246 S8 Lens 15.620 0.488 1.350 S9 Fifth 9.448 0.391 1.67919.236 1.600 S10 Lens 5.267 0.132 2.100 S11 Sixth 2.490 0.453 1.54656.114 1.951 S12 Lens 2.606 0.150 2.440 S13 Seventh 1.429 0.507 1.54656.114 2.691 S14 Lens 1.286 0.404 2.841 S15 Filter Infinity 0.210 1.51864.197 3.245 S16 Infinity 0.69171 3.316 S17 Imaging Infinity 3.733 Plane

TABLE 40 K A B C D E F G H J S1 −0.9855 −0.0214 0.04393 −0.0925 0.063340.0064 −0.0479 0.03721 −0.0126 0.00162 S2 −12.849 0.02342 −0.0441−0.1546 −0.0352 0.70959 −1.0004 0.6322 −0.1959 0.02423 S3 −1.1002−0.0276 0.08535 −0.4269 0.40108 0.3152 −0.8128 0.59947 −0.2021 0.02657S4 −7.367 −0.1684 1.46774 −5.7804 12.6396 −16.742 13.7341 −6.8183 1.8769−0.22 S5 9.31872 −0.2245 1.5162 −5.8569 13.0587 −17.823 15.1212 −7.77782.22306 −0.2714 S6 1.62652 −0.0856 0.27037 −0.9806 2.41503 −3.76493.67767 −2.1905 0.73267 −0.1058 S7 −4.7815 0.02644 −0.5178 1.91305−4.2532 5.86667 −5.0521 2.6239 −0.7455 0.08861 S8 5.85918 −0.0338−0.0317 0.00973 0.02909 −0.0644 0.06116 −0.0311 0.00835 −0.0008 S9−43.521 −0.002 −0.0021 0.04363 −0.1236 0.13892 −0.0871 0.03113 −0.00590.00048 S10 −12.729 −0.0608 0.02855 0.0052 −0.0244 0.01821 −0.00740.00175 −0.0002 1.2E−05  S11 −16.199 0.1227 −0.2762 0.2845 −0.21540.1043 −0.0311 0.00563 −0.0006 2.5E−05  S12 0.02424 −0.0902 0.05795−0.0568 0.02897 −0.0088 0.00172 −0.0002 1.6E−05 −5E−07 S13 −0.8394−0.4114 0.2062 −0.0647 0.01374 −0.0021 0.00025 −2E−05 1.5E−06 −5E−08 S14−1.3743 −0.2983 0.17337 −0.0777 0.0258 −0.006 0.00091 −9E−05 4.7E−06−1E−07

Twenty-First Example

FIG. 41 is a view illustrating a twenty-first example of an opticalimaging system, and FIG. 42 illustrates aberration curves of the opticalimaging system of FIG. 41.

The twenty-first example of the optical imaging system includes a firstlens 2110, a second lens 2120, a third lens 2130, a fourth lens 2140, afifth lens 2150, a sixth lens 2160, a seventh lens 2170, an infraredcut-off filter 2180, an image sensor 2190, and a stop (not shown)disposed between the second lens 2120 and the third lens 2130.

The first lens 2110 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 2120 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The third lens 2130 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fourth lens 2140 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fifth lens 2150 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The sixth lens 2160 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The seventh lens 2170 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

One inflection point is formed on the object-side surface of the seventhlens 2170. For example, the object-side surface of the seventh lens 2170is convex in the paraxial region, and becomes concave toward an edgethereof.

In addition, one inflection point is formed on the image-side surface ofthe seventh lens 2170. For example, the image-side surface of theseventh lens 2170 is concave in the paraxial region, and becomes convextoward an edge thereof.

Although not illustrated in FIG. 41, the stop is disposed at a distanceof 1.201 mm from the object-side surface of the first lens 2110 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 21 listed in Table 51 that appears later in this application.

Table 41 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 41, and Table 42 belowshows aspherical surface coefficients of the lenses of FIG. 41. Bothsurfaces of all of the lenses of FIG. 41 are aspherical.

TABLE 41 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First2.288893618 0.4894782 1.546 56.114 1.564 S2 Lens 2.875124177 0.12248761.556 S3 Second 3.193059813 0.5641206 1.546 56.114 1.519 S4 Lens102.3291196 0.025 1.495 S5 Third 9.029101492 0.23 1.679 19.236 1.430 S6Lens 4.032325022 0.439361 1.411 S7 Fourth 6.62040371 0.3812709 1.54656.114 1.543 S8 Lens 14.3245359 0.5329547 1.563 S9 Fifth 5.4175098820.4126831 1.679 19.236 1.840 S10 Lens 3.52467008 0.2029389 2.415 S11Sixth 2.389892022 0.5978277 1.546 56.114 2.201 S12 Lens 4.4769543270.396178 2.763 S13 Seventh 2.325640184 0.5183889 1.546 56.114 3.015 S14Lens 1.412164877 0.2273106 3.288 S15 Filter Infinity 0.21 1.518 64.1973.711 S16 Infinity 0.65 3.786 S17 Imaging Infinity 4.203 Plane

TABLE 42 K A B C D E F G H J S1 −1 −0.0109 0.01609 −0.0521 0.06751−0.0541 0.02509 −0.0062 0.0007  −2E−05 S2 −12.313 0.02487 −0.08120.06862 −0.0854 0.09225 −0.0564 0.01904 −0.0034 0.00024 S3 −1.1961−0.0151 −0.0414 0.07095 −0.1526 0.20198 −0.1389 0.05196 −0.0102 0.00082S4 −7.0515 −0.0439 0.22052 −0.5763 0.82041 −0.7024 0.37342 −0.12130.02212 −0.0017  S5 9.49254 −0.0841 0.26636 −0.6308 0.9198 −0.85070.50166 −0.1833 0.03808 −0.0035  S6 1.62777 −0.0537 0.06723 −0.07890.06026 −0.0261 0.00452 0.00104 −0.0003  −4E−05 S7 −4.8767 −0.0251−0.0455 0.15689 −0.312 0.36258 −0.2555 0.10673 −0.024 0.00222 S8 5.85919−0.0325 −0.0105 0.02258 −0.033 0.02143 −0.0047 −0.0015 0.00104 −0.0001 S9 −43.521 −0.009 −0.005 0.02832 −0.0424 0.0317 −0.0144 0.00396 −0.00063.8E−05 S10 −16.247 −0.0574 0.02998 −0.0024 −0.0083 0.00556 −0.00190.00037 −4E−05 1.7E−06 S11 −12.323 0.04452 −0.0879 0.07913 −0.0520.02134 −0.0055 0.00087 −8E−05 2.8E−06 S12 −0.1058 −0.0342 0.019 −0.01220.00328 −0.0005 6.3E−05 −9E−06  8E−07  −3E−08 S13 −0.7464 −0.26830.08381 −0.0065 −0.0032 0.00117 −0.0002 1.6E−05  −8E−07 1.5E−08 S14−1.4016 −0.2382 0.11628 −0.0418 0.01061 −0.0018 0.0002 −1E−05  5E−07 −8E−09

Twenty-Second Example

FIG. 43 is a view illustrating a twenty-second example of an opticalimaging system, and FIG. 44 illustrates aberration curves of the opticalimaging system of FIG. 43.

The twenty-second example of the optical imaging system includes a firstlens 2210, a second lens 2220, a third lens 2230, a fourth lens 2240, afifth lens 2250, a sixth lens 2260, a seventh lens 2270, an infraredcut-off filter 2280, an image sensor 2290, and a stop (not shown)disposed between the second lens 2220 and the third lens 2230.

The first lens 2210 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 2220 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The third lens 2230 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fourth lens 2240 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fifth lens 2250 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The sixth lens 2260 has a negative refractive power, and a paraxialregion of each of an object-side surface and an image-side surfacethereof is concave.

The seventh lens 2270 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

Two inflection points are formed on the object-side surface of theseventh lens 2270. For example, the object-side surface of the seventhlens 2270 is convex in the paraxial region, becomes concave in a regionoutside the paraxial region, and becomes convex toward an edge thereof.

In addition, one inflection point is formed on the image-side surface ofthe seventh lens 2270. For example, the image-side surface of theseventh lens 2270 is concave in the paraxial region, and becomes convextoward an edge thereof.

Although not illustrated in FIG. 43, the stop is disposed at a distanceof 0.951 mm from the object-side surface of the first lens 2210 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 22 listed in Table 51 that appears later in this application.

Table 43 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 43, and Table 44 belowshows aspherical surface coefficients of the lenses of FIG. 43. Bothsurfaces of all of the lenses of FIG. 43 are aspherical.

TABLE 43 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First1.747305824 0.6964434 1.546 56.114 1.280 S2 Lens 9.408357314 0.025 1.247S3 Second 2.976586304 0.23 1.667 20.353 1.150 S4 Lens 1.9564240170.3428009 1.007 S5 Third 16.8676436 0.2300239 1.667 20.353 1.032 S6 Lens16.01257049 0.0294424 1.089 S7 Fourth 7.314351738 0.356959 1.546 56.1141.130 S8 Lens 17.39191974 0.3707783 1.228 S9 Fifth 11.56172447 0.36082021.656 21.525 1.317 S10 Lens 6.918405514 0.2917084 1.657 S11 Sixth−97.16346173 0.5907913 1.656 21.525 1.878 S12 Lens 17.27666898 0.03012532.338 S13 Seventh 1.932241094 0.8257708 1.546 56.114 2.961 S14 Lens1.739016534 0.2207138 3.015 S15 Filter Infinity 0.21 1.518 64.197 3.305S16 Infinity 0.6498919 3.375 S17 Imaging Infinity 3.731 Plane

TABLE 44 K A B C D E F G H J S1 −0.3029 0.00034 0.02484 −0.0645 0.08868−0.0757 0.0373 −0.0109 0.00139 0 S2 0.99973 −0.0385 0.05948 −0.06390.00521 0.0552 −0.0624 0.02956 −0.0054 0 S3 −1.759 −0.0559 0.07693−0.084 0.09591 −0.0711 0.03087 −0.0026 −0.0012 0 S4 −0.2233 −0.022−0.0153 0.13577 −0.2648 0.33105 −0.2167 0.05099 0.00976 0 S5 −0.8179−0.0092 −0.0103 −0.1607 0.63034 −1.1881 1.27457 −0.7449 0.18468 0 S6−0.0005 0.01997 −0.1312 0.11419 −0.0014 0.0632 −0.1761 0.13356 −0.0335 0S7 −31.717 0.02656 −0.0935 −0.0104 0.2126 −0.2049 0.0541 0.02004 −0.00980 S8 −1.0151 −0.0315 0.02884 −0.0714 0.09345 −0.1394 0.17678 −0.13440.05241 −0.0076 S9 0.382 −0.1094 0.03271 −0.0826 0.21377 −0.3162 0.24272−0.0962 0.01564 0 S10 −27.524 −0.0394 −0.117 0.16282 −0.1238 0.05513−0.0144 0.00227 −0.0002 0 S11 23.2031 0.18019 −0.2793 0.22076 −0.12580.0475 −0.0113 0.00159 −0.0001 0 S12 −49.948 0.03358 −0.0362 0.00983−0.0011 −0.0001 7.6E−05 −1E−05 6.1E−07 0 S13 −1.8504 −0.2437 0.10759−0.031 0.00661 −0.001 0.0001 −6E−06 1.5E−07 0 S14 −0.8299 −0.173 0.06293−0.0196 0.00438 −0.0006 5.8E−05 −3E−06 6.1E−08 0

Twenty-Third Example

FIG. 45 is a view illustrating a twenty-third example of an opticalimaging system, and FIG. 46 illustrates aberration curves of the opticalimaging system of FIG. 45.

The twenty-third example of the optical imaging system includes a firstlens 2310, a second lens 2320, a third lens 2330, a fourth lens 2340, afifth lens 2350, a sixth lens 2360, a seventh lens 2370, an infraredcut-off filter 2380, an image sensor 2390, and a stop (not shown)disposed between the second lens 2320 and the third lens 2330.

The first lens 2310 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 2320 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The third lens 2330 has a positive refractive power, a paraxial regionof an object-side surface thereof is concave, and a paraxial region ofan image-side surface thereof is convex.

The fourth lens 2340 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fifth lens 2350 has a positive refractive power, a paraxial regionof an object-side surface thereof is concave, and a paraxial region ofan image-side surface thereof is convex.

The sixth lens 2360 has a positive refractive power, a paraxial regionof an object-side surface thereof is concave, and a paraxial region ofan image-side surface thereof is convex.

The seventh lens 2370 has a negative refractive power, and a paraxialregion of each of an object-side surface and an image-side surfacethereof is concave.

No inflection point is formed on the object-side surface of the seventhlens 2370.

In addition, one inflection point is formed on the image-side surface ofthe seventh lens 2370. For example, the image-side surface of theseventh lens 2370 is concave in the paraxial region, and becomes convextoward an edge thereof.

Although not illustrated in FIG. 45, the stop is disposed at a distanceof 0.872 mm from the object-side surface of the first lens 2310 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 23 listed in Table 51 that appears later in this application.

Table 45 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 45, and Table 46 belowshows aspherical surface coefficients of the lenses of FIG. 45. Bothsurfaces of all of the lenses of FIG. 45 are aspherical.

TABLE 45 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First1.76028791 0.6171815 1.546 56.114 1.100 S2 Lens 14.12333348 0.025 1.040S3 Second 5.834118934 0.23 1.667 20.353 1.011 S4 Lens 3.1226714460.3733379 0.919 S5 Third −49.94173366 0.3798697 1.546 56.114 0.995 S6Lens −15.18699611 0.1809039 1.096 S7 Fourth 23.36800299 0.3031664 1.66720.353 1.124 S8 Lens 12.20982926 0.3354305 1.309 S9 Fifth −4.3947719820.4728905 1.546 56.114 1.471 S10 Lens −1.598299305 0.025 1.698 S11 Sixth−6.081499124 0.5446656 1.546 56.114 1.822 S12 Lens −3.0145335390.2724323 2.192 S13 Seventh −6.149442968 0.42237 1.546 56.114 2.462 S14Lens 1.636694252 0.1933361 2.880 S15 Filter Infinity 0.21 1.518 64.1973.223 S16 Infinity 0.6544156 3.300 S17 Imaging Infinity 3.728 Plane

TABLE 46 K A B C D E F G H J S1 −1.0054 0.02246 0.02216 −0.0696 0.16036−0.2238 0.18065 −0.0791 0.01412 0 S2 −1.5097 −0.1275 0.3975 −0.69820.68012 −0.322 0.02875 0.02904 −0.0076 0 S3 6.02943 −0.163 0.45041−0.8514 1.05249 −0.8203 0.42351 −0.138 0.0213 0 S4 −0.8846 −0.04490.03929 0.15739 −0.6934 1.31707 −1.3069 0.67995 −0.143 0 S5 0 −0.0513−0.0193 −0.016 0.00429 0.00341 −0.0155 0.03192 −0.0128 0 S6 0 −0.1089−0.0569 0.35761 −0.9255 1.19468 −0.8604 0.33221 −0.0547 0 S7 −7.5−0.2139 −0.0107 0.17878 −0.1827 −0.1159 0.3046 −0.1897 0.04049 0 S8−43.341 −0.1402 −0.061 0.2777 −0.4123 0.3523 −0.1857 0.05641 −0.0071 0S9 −35.081 −0.0602 0.07357 −0.1046 0.10843 −0.0726 0.02553 −0.00410.00022 0 S10 −1.5734 0.16205 −0.2197 0.18955 −0.107 0.03959 −0.00910.00113 −6E−05 0 S11 0.51533 0.21373 −0.3167 0.23989 −0.1217 0.03837−0.0069 0.00066 −3E−05 0 S12 −1.1466 0.19671 −0.2565 0.15417 −0.05320.01146 −0.0015 0.00012 −4E−06 0 S13 −0.9056 −0.0077 −0.2094 0.18829−0.0749 0.01671 −0.0022 0.00015 −5E−06 0 S14 −1.2797 −0.2192 0.10065−0.0338 0.00878 −0.0018 0.00026 −2E−05 1.3E−06  −3E−08

Twenty-Fourth Example

FIG. 47 is a view illustrating a twenty-fourth example of an opticalimaging system, and FIG. 48 illustrates aberration curves of the opticalimaging system of FIG. 47.

The twenty-fourth example of the optical imaging system includes a firstlens 2410, a second lens 2420, a third lens 2430, a fourth lens 2440, afifth lens 2450, a sixth lens 2460, a seventh lens 2470, an infraredcut-off filter 2480, an image sensor 2490, and a stop (not shown)disposed between the second lens 2420 and the third lens 2430.

The first lens 2410 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 2420 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The third lens 2430 has a positive refractive power, a paraxial regionof an object-side surface thereof is concave, and a paraxial region ofan image-side surface thereof is convex.

The fourth lens 2440 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fifth lens 2450 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The sixth lens 2460 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The seventh lens 2470 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

Two inflection points are formed on the object-side surface of theseventh lens 2470. For example, the object-side surface of the seventhlens 2470 is convex in the paraxial region, becomes concave in a regionoutside the paraxial region, and becomes convex toward an edge thereof.

In addition, one inflection point is formed on the image-side surface ofthe seventh lens 2470. For example, the image-side surface of theseventh lens 2470 is concave in the paraxial region, and becomes convextoward an edge thereof.

Although not illustrated in FIG. 47, the stop is disposed at a distanceof 0.866 mm from the object-side surface of the first lens 2410 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 24 listed in Table 51 that appears later in this application.

Table 47 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 47, and Table 48 belowshows aspherical surface coefficients of the lenses of FIG. 47. Bothsurfaces of all of the lenses of FIG. 47 are aspherical.

TABLE 47 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First1.882954913 0.5871918 1.546 56.114 1.050 S2 Lens 18.07331507 0.04919760.962 S3 Second 4.599463678 0.23 1.667 20.353 0.934 S4 Lens 2.5463774740.3929389 0.837 S5 Third −21.75460448 0.2744632 1.546 56.114 1.100 S6Lens −13.51443301 0.0611157 1.106 S7 Fourth 25.33486158 0.2655293 1.54656.114 1.200 S8 Lens 25.33602848 0.3710469 1.285 S9 Fifth 9.4681880480.3930453 1.656 21.525 1.500 S10 Lens 5.10288098 0.3790363 1.754 S11Sixth 6.416223875 0.888499 1.546 56.114 2.041 S12 Lens 6.3520620010.0460253 2.631 S13 Seventh 1.966539749 0.8854198 1.536 55.656 3.050 S14Lens 1.769884599 0.3097825 3.456 S15 Filter Infinity 0.21 1.518 64.1973.768 S16 Infinity 0.65 3.829 S17 Imaging Infinity 4.129 Plane

TABLE 48 K A B C D E F G H J S1 −0.1525 0.00346 0.00541 −0.0238 0.05874−0.0925 0.08078 −0.0376 0.00687 0 S2 −36.188 −0.0554 0.19103 −0.49540.90918 −1.1194 0.84898 −0.3546 0.06168 0 S3 −0.1164 −0.0883 0.22642−0.5273 0.9947 −1.274 1.01042 −0.4343 0.07596 0 S4 0.3326 −0.04620.09702 −0.2316 0.5455 −0.848 0.78539 −0.3759 0.07082 0 S5 51.7577−0.0119 −0.0911 0.36173 −0.9067 1.38454 −1.3014 0.68351 −0.1493 0 S642.1637 0.0924 −0.5269 1.35579 −2.2584 2.50931 −1.8107 0.76109 −0.139 0S7 −4.7579 0.13357 −0.5938 1.26101 −1.8115 1.7924 −1.1666 0.44267−0.0728 0 S8 −3.4393 0.04714 −0.1842 0.28859 −0.3575 0.32734 −0.19710.06695 −0.0093 0 S9 −8.5449 −0.0502 −0.0588 0.15989 −0.2027 0.13981−0.0542 0.01046 −0.0007 0 S10 −18.064 −0.044 −0.0734 0.14254 −0.13030.06906 −0.0217 0.00378 −0.0003 0 S11 −4.6497 0.06328 −0.1193 0.08822−0.0426 0.01348 −0.0028 0.00037 −2E−05 0 S12 −50 0.03403 −0.0497 0.02457−0.0072 0.00126 −0.0001 6.9E−06 −2E−07 0 S13 −2.4291 −0.1201 0.016670.00224 −0.0009 0.00011 −6E−06 1.3E−07 8.8E−10  0 S14 −1.0032 −0.11110.02485 −0.0032 −0.0001 0.00013 −2E−05 1.9E−06 −8E−08 1.4E−09

Twenty-Fifth Example

FIG. 49 is a view illustrating a twenty-fifth example of an opticalimaging system, and FIG. 50 illustrates aberration curves of the opticalimaging system of FIG. 49.

The twenty-fifth example of the optical imaging system includes a firstlens 2510, a second lens 2520, a third lens 2530, a fourth lens 2540, afifth lens 2550, a sixth lens 2560, a seventh lens 2570, an infraredcut-off filter 2580, an image sensor 2590, and a stop (not shown)disposed between the second lens 2520 and the third lens 2530.

The first lens 2510 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The second lens 2520 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The third lens 2530 has a positive refractive power, a paraxial regionof an object-side surface thereof is concave, and a paraxial region ofan image-side surface thereof is convex.

The fourth lens 2540 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The fifth lens 2550 has a negative refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The sixth lens 2560 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

The seventh lens 2570 has a positive refractive power, a paraxial regionof an object-side surface thereof is convex, and a paraxial region of animage-side surface thereof is concave.

Two inflection points are formed on the object-side surface of theseventh lens 2570. For example, the object-side surface of the seventhlens 2570 is convex in the paraxial region, becomes concave in a regionoutside the paraxial region, and becomes convex toward an edge thereof.

In addition, one inflection point is formed on the image-side surface ofthe seventh lens 2570. For example, the image-side surface of theseventh lens 2570 is concave in the paraxial region, and becomes convextoward an edge thereof.

Although not illustrated in FIG. 49, the stop is disposed at a distanceof 0.904 mm from the object-side surface of the first lens 2510 towardthe imaging plane of the optical imaging system. This distance is equalto TTL-SL and can be calculated from the values of TTL and SL forExample 25 listed in Table 51 that appears later in this application.

Table 49 below shows physical properties of the lenses and otherelements of the optical imaging system of FIG. 49, and Table 50 belowshows aspherical surface coefficients of the lenses of FIG. 49. Bothsurfaces of all of the lenses of FIG. 49 are aspherical.

TABLE 49 Effective Surface Radius of Thickness/ Index of Abbe ApertureNo. Element Curvature Distance Refraction Number Radius S1 First1.898698558 0.6486367 1.546 56.114 1.260 S2 Lens 7.35678597 0.025 1.216S3 Second 3.87893073 0.23 1.667 20.353 1.161 S4 Lens 2.7620088910.3408168 1.053 S5 Third −50.1241934 0.2818618 1.546 56.114 1.120 S6Lens −14.98893663 0.0597334 1.158 S7 Fourth 12.04981408 0.269789 1.54656.114 1.220 S8 Lens 12.56574443 0.2918619 1.320 S9 Fifth 9.5925759830.35 1.667 20.353 1.520 S10 Lens 5.27478585 0.3343756 1.762 S11 Sixth6.87350249 0.8484117 1.546 56.114 2.052 S12 Lens 7.493319886 0.05911052.641 S13 Seventh 2.033708385 0.8835732 1.536 55.656 3.070 S14 Lens1.843638917 0.3047846 3.425 S15 Filter Infinity 0.21 1.518 64.197 3.764S16 Infinity 0.6591161 3.825 S17 Imaging Infinity 4.134 Plane

TABLE 50 K A B C D E F G H J S1 −0.1061 −0.0082 0.0469 −0.0925 0.08107−0.0129 −0.032 0.02237 −0.0047 0 S2 −36.188 −0.0502 0.16245 −0.40290.69307 −0.7643 0.50209 −0.1789 0.02641 0 S3 0.0036 −0.0795 0.20571−0.548 1.07416 −1.291 0.90975 −0.3412 0.05201 0 S4 0.40382 −0.03250.08844 −0.3009 0.70037 −0.9194 0.67381 −0.2424 0.03077 0 S5 51.75770.00548 −0.1746 0.50176 −0.9395 1.14417 −0.9144 0.4407 −0.0937 0 S642.1637 0.09529 −0.4992 1.03966 −1.2284 0.81694 −0.2802 0.03842  4E−06 0S7 −4.7579 0.1185 −0.4938 0.85535 −0.8643 0.51674 −0.185 0.04168 −0.00540 S8 −3.4393 0.04916 −0.194 0.31472 −0.3773 0.32494 −0.1878 0.06297−0.0088 0 S9 −8.5449 −0.0638 0.02895 −0.0884 0.16492 −0.171 0.09832−0.0306 0.00409 0 S10 −18.064 −0.0543 −0.0172 0.03209 −0.0179 0.003974.6E−06  −0.0001 7.7E−06  0 S11 −4.6497 0.05354 −0.0909 0.06134 −0.03110.01102 −0.0026 0.00036 −2E−05 0 S12 −50 0.01031 −0.0176 0.00573 −0.00150.0003 −4E−05 2.4E−06 −6E−08 0 S13 −2.606 −0.1177 0.01922 −0.0004 −1E−04 −1E−05 4.5E−06   −4E−07 9.4E−09  0 S14 −1.0102 −0.0979 0.01866 −0.00240.00013 2.1E−05 −6E−06 5.9E−07 −3E−08 5.6E−10

Table 51 below shows an overall focal length f of the optical imagingsystem, an overall length TTL of the optical imaging system (a distancealong the optical axis from the object-side surface of the first lens tothe imaging plane), a distance SL along the optical axis from the stopto the imaging plane, an f-number (F No.) of the optical imaging system(the overall focal length f of the optical imaging system divided by thediameter of an entrance pupil of the optical imaging system, where bothf and the diameter of the entrance pupil are expressed in mm), an imageheight (IMG HT) on the imaging plane (one-half of a diagonal length ofthe imaging plane), and a field of view (FOV) of the optical imagingsystem for each of Examples 1-25 described herein. The values of f, TTL,SL, and IMG HT are expressed in mm. The values of F No. aredimensionless values. The values of FOV are expressed in degrees.

TABLE 51 Example f TTL SL F No. IMG HT FOV 1 3.661 4.200 3.530 1.993.261 82.10 2 4.824 6.000 5.071 1.51 4.000 78.10 3 4.283 5.190 3.9391.59 3.690 79.82 4 4.256 5.190 3.931 1.58 3.680 80.22 5 3.950 4.8193.650 1.58 3.250 77.47 6 4.350 5.300 4.917 1.58 3.384 79.58 7 4.2955.200 4.820 1.58 3.700 80.40 8 4.280 5.100 4.369 1.71 3.535 77.84 94.320 5.307 4.632 1.69 3.535 77.34 10 4.144 5.026 4.299 1.58 3.261 75.7811 4.401 5.300 4.142 1.69 3.728 79.31 12 4.570 5.500 4.321 1.76 3.72877.22 13 4.100 5.100 4.395 1.67 3.535 80.20 14 4.447 5.144 4.894 2.073.528 75.63 15 4.400 5.200 4.576 1.81 3.261 72.55 16 3.994 5.125 4.4841.57 3.261 77.38 17 3.920 4.700 4.020 1.83 3.261 78.33 18 4.020 4.9403.938 1.58 3.226 76.00 19 4.589 5.600 4.680 1.60 4.250 84.74 20 4.5885.617 4.489 1.69 3.728 76.90 21 4.825 6.000 4.799 1.54 4.200 80.78 224.586 5.461 4.510 1.79 3.728 76.96 23 4.302 5.240 4.368 1.95 3.728 80.4624 4.966 5.993 5.127 2.36 4.128 78.45 25 4.667 5.797 4.893 1.85 4.12881.80

Table 52 below shows in mm a focal length f1 of the first lens, a focallength f2 of the second lens, a focal length f3 of the third lens, afocal length f4 of the fourth lens, a focal length f5 of the fifth lens,a focal length f6 of the sixth lens, and a focal length f7 of theseventh lens for each of Examples 1-25 described herein.

TABLE 52 Example f1 f2 f3 f4 f5 f6 f7 1 3.280 −8.812 14.304 88.905−14.053 45.800 −19.470 2 4.756 −12.434 26.345 −55.14 −12.854 2.765−2.459 3 9.589 4.541 −6.987 17555491.98 558.700 −30.322 1998.195 4 9.0604.692 −7.025 −4861.622 80.126 −24.191 1985.391 5 8.409 4.355 −6.520−4512.292 74.369 −22.452 1842.731 6 −64.233 3.248 −7.428 −43.722 52.4253.010 −2.424 7 −93.911 3.277 −7.309 −50.652 51.954 3.091 −2.480 8 3.596−7.349 −1245.238 15.657 −19.723 2.662 −2.171 9 3.666 −7.618 −1000013.763 −14.934 2.598 −2.164 10 3.570 −7.440 −291.941 16.218 −22.3702.450 −2.041 11 9.952 4.985 −9.042 −60.959 28.461 −19.130 −36.205 129.429 5.081 −7.743 123.361 85.209 −19.468 −153.686 13 3.799 −7.72919.693 39.540 23.018 3.741 −2.251 14 3.626 −6.978 10.551 125.381 −28.155−367.720 −9.031 15 4.290 −10.606 30.978 14.871 −21.133 3.784 −2.465 165.677 −73.551 −122.716 15.510 207.375 3.799 −2.466 17 3.540 −8.760−87.360 14.180 −64.180 −799.990 −18.040 18 4.858 13.152 −8.241 −32.62534.583 2.462 −2.100 19 4.929 −16.125 30.244 −34.061 −58.155 2.600 −2.17220 14.270 5.487 −9.006 21.072 −18.204 43.002 92.362 21 15.861 6.019−10.927 22.137 −16.283 8.518 −8.229 22 3.808 −9.408 −530.750 22.837−27.105 −22.324 66.015 23 3.620 −10.428 39.821 −38.762 4.342 10.303−2.323 24 3.802 −8.955 64.595 12384.769 −17.503 299.093 57.797 25 4.499−15.674 39.058 453.779 −18.160 102.612 59.134

Table 53 below shows in mm a thickness (L1edgeT) of an edge of the firstlens, a thickness (L2edgeT) of the edge of the second lens, a thickness(L3edgeT) of the edge of the third lens, a thickness (L4edgeT) of theedge of the fourth lens, a thickness (L5edgeT) of the edge of the fifthlens, a thickness (L6edgeT) of the edge of the sixth lens, and athickness (L7edgeT) of the edge of the seventh lens for each of Examples1-25 described herein.

TABLE 53 Example L1edgeT L2edgeT L3edgeT L4edgeT L5edgeT L6edgeT L7edgeT1 0.201 0.208 0.200 0.200 0.241 0.242 0.338 2 0.271 0.346 0.259 0.3540.283 0.265 0.818 3 0.251 0.283 0.360 0.220 0.290 0.328 0.391 4 0.2510.280 0.359 0.218 0.293 0.356 0.364 5 0.233 0.259 0.333 0.203 0.2720.330 0.376 6 0.220 0.270 0.348 0.224 0.259 0.269 0.437 7 0.219 0.2660.352 0.227 0.241 0.269 0.394 8 0.222 0.377 0.235 0.240 0.189 0.2600.323 9 0.163 0.363 0.211 0.245 0.372 0.231 0.615 10 0.163 0.350 0.2570.281 0.193 0.260 0.446 11 0.257 0.255 0.340 0.276 0.365 0.307 0.278 120.294 0.250 0.368 0.296 0.447 0.268 0.429 13 0.255 0.385 0.227 0.3380.222 0.349 0.492 14 0.269 0.308 0.190 0.230 0.410 0.714 0.300 15 0.2050.407 0.201 0.333 0.278 0.348 0.815 16 0.218 0.347 0.211 0.259 0.2770.251 0.950 17 0.100 0.280 0.120 0.420 0.160 0.410 0.580 18 0.212 0.2100.351 0.213 0.236 0.357 0.445 19 0.373 0.329 0.222 0.285 0.186 0.2210.456 20 0.250 0.342 0.384 0.409 0.295 0.727 0.283 21 0.247 0.240 0.4130.254 0.352 0.632 0.553 22 0.231 0.289 0.255 0.254 0.360 0.476 0.658 230.252 0.293 0.238 0.374 0.258 0.415 0.686 24 0.293 0.298 0.252 0.2510.409 0.715 0.678 25 0.246 0.280 0.254 0.273 0.356 0.630 0.692

Table 54 below shows in mm a sag value (L5S1sag) at an outer end of theoptical portion of the object-side surface of the fifth lens, a sagvalue (L5S2sag) at an outer end of the optical portion of the image-sidesurface of the fifth lens, a thickness (Yc71P1) of the seventh lens at afirst inflection point on the object-side surface of the seventh lens, athickness (Yc7l P2) of the seventh lens at a second inflection point onthe object-side surface of the seventh lens, a thickness (Yc72P1) of theseventh lens at a first inflection point on the image-side surface ofthe seventh lens, and a thickness (Yc72P2) of the seventh lens at asecond inflection point on the image-side surface of the seventh lensfor each of Examples 1-25 described herein.

TABLE 54 Example L5S1 sag L5S2 sag Yc71P1 Yc71P2 Yc72P1 Yc72P2 1 −0.351−0.325 0.519 0.475 0.615 — 2 −0.447 −0.533 1.324 — 0.931 — 3 0.107 0.1580.597 0.698 0.692 — 4 0.153 0.181 0.610 0.712 0.719 — 5 0.200 0.2020.568 0.670 0.667 — 6 0.115 0.139 0.930 — 0.811 — 7 0.108 0.144 0.863 —0.793 — 8 −0.466 −0.526 2.933 — 4.142 — 9 −0.439 −0.510 3.086 — 4.417 —10 −0.453 −0.501 2.843 — 4.129 — 11 0.210 0.245 0.569 0.641 0.670 — 120.202 0.177 0.603 0.704 0.717 — 13 −0.441 −0.501 0.825 0.575 0.807 0.52814 −0.261 −0.263 0.473 — 0.631 — 15 −0.485 −0.407 0.890 — 0.920 — 16−0.479 −0.422 — — 0.781 — 17 −0.440 −0.450 0.730 — 1.120 — 18 −0.301−0.528 0.849 — 0.718 — 19 0.334 0.378 0.719 — 0.402 0.845 20 0.221 0.3180.570 0.452 0.633 — 21 0.199 0.269 0.603 — 0.797 — 22 0.280 0.281 0.8830.915 0.988 — 23 0.276 0.509 — — 0.968 — 24 0.092 0.103 0.955 1.1031.128 — 25 0.179 0.173 0.964 1.114 1.130 —

Table 55 below shows in mm an inner diameter of each of the first toseventh spacers for each of Examples 1-25 described herein. S1d is aninner diameter of the first spacer SP1, S2d is an inner diameter of thesecond spacer SP2, S3d is an inner diameter of the third spacer SP3, S4dis an inner diameter of the fourth spacer SP4, S5d is an inner diameterof the fifth spacer SP5, S6d is an inner diameter of the sixth spacerSP6, and S7d is an inner diameter of the seventh spacer SP7.

TABLE 55 Example S1d S2d S3d S4d S5d S6d S7d 1 1.73 1.55 1.65 2.07 2.954.28 — 2 2.84 2.53 2.87 3.35 4.18 6.11 — 3 1.35 1.23 1.14 1.53 2.07 2.78— 4 1.33 1.22 1.2 1.58 2.05 2.69 — 5 1.24 1.15 1.03 1.48 1.9 2.46 — 61.34 1.23 1.03 1.5 1.98 2.66 — 7 1.33 1.22 1.05 1.5 2.01 2.7 — 8 2.312.16 2.54 2.94 4.06 4.84 5.12 9 2.44 2.21 2.56 2.87 4.11 4.8 5.14 102.47 2.21 2.53 2.79 3.78 4.51 — 11 2.58 2.4 2.49 2.97 4.16 4.89 5.51 122.49 2.31 2.41 3.02 4.11 4.93 5.6  13 2.314 2.218 2.55 3.016 3.964 5.31— 14 2.12 2.1 2.04 2.12 2.81 4.64 — 15 2.32 2.36 2.56 2.93 3.7 4.35 — 162.41 2.3 2.66 3.03 3.76 — — 17 2.106 1.886 2.008 2.7 3.074 4.484 — 182.42 2.23 2.07 2.41 3.08 4.23 — 19 2.66 2.49 2.72 3.15 4.38 5.81 — 202.67 2.5 2.44 2.99 3.8 5.27 — 21 3.07 2.92 2.9 3.32 4.4 5.75 5.93 222.36 2.03 2.25 2.65 3.64 5.14 5.3  23 2.06 1.89 2.15 2.7 3.61 4.56 4.8424 1.89 1.84 2.33 2.73 3.73 5.43 6.03 25 2.39 2.15 2.4 2.82 3.94 5.686.02

Table 56 below shows in mm³ a volume of each of the first to seventhlenses for each of Examples 1-25 described herein. L1 v is a volume ofthe first lens, L2 v is a volume of the second lens, L3 v is a volume ofthe third lens, L4 v is a volume of the fourth lens, L5 v is a volume ofthe fifth lens, L6 v is a volume of the sixth lens, and L7 v is a volumeof the seventh lens.

TABLE 56 Example L1v L2v L3v L4v L5v L6v L7v 1 2.336 2.062 2.454 3.0484.634 7.957 14.005 2 9.275 5.426 7.668 9.632 13.386 16.950 47.319 36.581 7.121 7.766 6.637 11.774 12.564 20.431 4 7.068 7.912 8.188 6.5507.990 12.999 20.487 5 6.344 6.949 7.760 6.208 6.896 10.336 16.560 65.725 8.018 8.377 7.959 10.343 11.103 27.151 7 5.364 6.531 6.281 6.3418.166 9.359 23.820 8 5.234 5.060 5.146 4.140 5.986 8.138 19.681 9 4.6225.306 4.852 4.117 10.028 8.334 26.661 10 5.224 4.992 5.618 5.503 5.5777.249 20.082 11 5.639 4.858 6.675 7.163 11.037 11.936 27.122 12 5.6604.496 6.414 6.668 11.628 11.465 24.810 13 4.768 6.603 5.725 6.963 8.37014.105 26.378 14 3.812 4.671 4.055 5.063 11.284 25.762 16.565 15 4.2355.537 5.593 7.547 9.420 8.999 27.326 16 4.653 4.657 6.231 6.713 10.26711.740 33.537 17 2.513 3.775 2.303 9.423 4.007 16.049 22.287 18 3.7683.460 4.028 5.007 6.979 11.351 18.888 19 9.538 6.253 6.836 7.614 9.63619.918 32.859 20 5.036 6.731 5.976 9.373 10.486 21.693 17.198 21 6.8016.939 8.141 8.791 14.589 27.072 34.703 22 5.485 3.980 4.127 4.693 9.88520.336 35.332 23 3.810 3.975 3.927 6.189 7.516 13.035 31.859 24 4.7524.366 6.456 5.072 9.867 36.871 47.470 25 5.627 4.949 5.142 5.079 9.36231.583 47.908

Table 57 below shows in mg a weight of each of the first to seventhlenses for each of Examples 1-25 described herein. L1 w is a weight ofthe first lens, L2 w is a weight of the second lens, L3 w is a weight ofthe third lens, L4 w is a weight of the fourth lens, L5 w is a weight ofthe fifth lens, L6 w is a weight of the sixth lens, and L7 w is a weightof the seventh lens.

TABLE 57 Example L1w L2w L3w L4w L5w L6w L7w 1 2.430 2.537 2.553 3.1705.792 9.947 14.145 2 9.646 6.674 7.975 11.847 16.732 17.628 49.211 36.844 7.406 9.708 8.296 12.245 15.705 20.635 4 7.351 8.229 10.235 8.1888.310 16.249 20.692 5 6.598 7.227 9.700 7.760 7.172 12.921 16.725 65.954 8.339 10.472 9.710 12.619 11.547 28.237 7 5.579 6.793 7.852 7.7369.962 9.733 24.773 8 5.444 6.223 5.351 4.306 7.362 8.463 20.468 9 4.8076.527 5.046 4.282 12.334 8.667 27.727 10 5.433 6.140 5.843 5.723 6.8597.539 20.885 11 5.865 5.052 8.344 8.953 11.478 14.920 27.393 12 5.8864.676 8.017 6.935 12.093 14.331 25.803 13 4.958 8.121 7.042 7.242 10.37917.491 26.642 14 3.964 5.746 4.217 5.266 14.106 26.792 17.227 15 4.4046.810 5.817 7.849 11.587 9.359 28.419 16 4.839 5.728 6.480 6.982 12.62912.210 34.879 17 2.614 4.643 2.833 9.800 5.009 20.061 22.510 18 3.9193.598 4.954 5.207 8.724 11.805 19.643 19 9.919 7.816 7.110 9.365 11.75620.715 34.174 20 5.237 7.001 7.471 9.748 13.107 22.560 17.886 21 7.0737.217 10.176 9.142 18.237 28.155 36.091 22 5.705 4.895 5.077 4.88012.356 25.420 35.685 23 3.962 4.889 4.084 7.612 7.817 13.556 33.133 244.942 5.370 6.714 5.275 12.334 38.345 47.945 25 5.852 6.087 5.348 5.28211.516 32.847 48.387

Table 58 below shows in mm an overall outer diameter (including a rib)of each of the first to seventh lenses for each of Examples 1-25described herein. L1TR is an overall outer diameter of the first lens,L2TR is an overall outer diameter of the second lens, L3TR is an overallouter diameter of the third lens, L4TR is an overall outer diameter ofthe fourth lens, L5TR is an overall outer diameter of the fifth lens,L6TR is an overall outer diameter of the sixth lens, and L7TR is anoverall outer diameter of the seventh lens.

TABLE 58 Example L1TR L2TR L3TR L4TR L5TR L6TR L7TR 1 3.38 3.58 3.884.18 4.88 5.5 5.7 2 4.73 4.93 5.43 6.03 7 7.4 7.6 3 2.27 2.39 2.52 2.753.02 3.21 3.32 4 2.28 2.4 2.53 2.63 2.78 3.15 3.25 5 2.29 2.4 2.54 2.632.78 2.91 3.04 6 2.46 2.58 2.69 2.8 3.17 3.31 3.47 7 2.24 2.29 2.38 2.572.78 3.09 3.5 8 4.22 4.42 4.54 4.72 5.4 5.74 6.3 9 4.31 4.46 4.59 4.765.45 5.79 6.49 10 4.33 4.53 4.66 4.92 5.09 5.72 5.97 11 4.21 4.3 4.444.84 5.47 6.12 6.9 12 4.13 4.22 4.36 4.76 5.39 6.04 6.91 13 4.042 4.2524.77 5.406 6.158 6.67 6.912 14 3.51 3.81 4.39 4.98 5.85 6.15 6.25 153.93 4.13 4.71 6.17 5.3 6.57 6.67 16 4.03 4.23 4.81 5.4 6.27 6.67 6.7717 3.83 4.078 4.22 4.98 5.74 6.174 6.51 18 3.83 4.03 4.23 4.83 5.32 5.725.92 19 4.83 5.13 5.43 6.23 6.72 7.12 7.32 20 4.25 4.34 4.48 4.88 5.516.33 6.7 21 4.71 4.8 4.93 5.37 6.22 7.25 7.68 22 4.09 4.18 4.3 4.53 5.226.62 7.32 23 3.73 3.82 3.96 4.39 4.96 6 6.86 24 3.97 4.06 4.19 4.63 5.27.15 8.02 25 4.39 4.48 4.61 5.04 5.61 7.09 7.95

Table 59 below shows in mm a maximum thickness of the rib of each of thefirst to seventh lenses for each of Examples 1-25 described herein. Themaximum thickness of the rib is a thickness of a portion of the rib incontact with a spacer. L1 rt is a maximum thickness of the rib of thefirst lens, L2 rt is a maximum thickness of the rib of the second lens,L3 rt is a maximum thickness of the rib of the third lens, L4 rt is amaximum thickness of the rib of the fourth lens, L5 rt is a maximumthickness of the rib of the fifth lens, L6 rt is a maximum thickness ofthe rib of the sixth lens, and L7 rt is a maximum thickness of the ribof the seventh lens.

TABLE 59 Example L1rt L2rt L3rt L4rt L5rt L6rt L7rt 1 0.245 0.26 0.250.235 0.305 0.285 0.44 2 0.61 0.37 0.33 0.32 0.37 0.465 0.895 3 0.590.48 0.51 0.27 0.48 0.31 0.41 4 0.6 0.54 0.54 0.44 0.25 0.38 0.42 5 0.540.5 0.52 0.42 0.21 0.39 0.4 6 0.39 0.44 0.47 0.36 0.42 0.38 0.47 7 0.540.44 0.47 0.35 0.43 0.38 0.41 8 0.435 0.43 0.36 0.215 0.32 0.33 0.405 90.38 0.46 0.34 0.2 0.5 0.34 0.67 10 0.41 0.41 0.37 0.37 0.29 0.33 0.5211 0.55 0.38 0.58 0.41 0.5 0.32 0.53 12 0.56 0.36 0.59 0.41 0.53 0.30.46 13 0.431 0.487 0.372 0.288 0.315 0.394 0.534 14 0.482 0.395 0.3160.328 0.422 0.885 0.409 15 0.431 0.556 0.361 0.429 0.38 0.38 0.667 160.431 0.457 0.361 0.364 0.38 0.334 0.729 17 0.326 0.433 0.265 0.4720.156 0.52 0.641 18 0.39 0.33 0.3 0.26 0.425 0.55 0.534 19 0.57 0.4 0.310.22 0.355 0.57 0.625 20 0.48 0.49 0.48 0.5 0.47 0.83 0.32 21 0.53 0.410.56 0.57 0.48 0.6 0.62 22 0.51 0.25 0.32 0.32 0.51 0.53 0.72 23 0.40.42 0.37 0.5 0.32 0.46 0.72 24 0.47 0.41 0.45 0.41 0.47 0.93 0.7 250.44 0.39 0.4 0.4 0.38 0.74 0.72

FIG. 54 is a cross-sectional view illustrating an example of a seventhlens.

FIG. 54 illustrates the overall outer diameter (L7TR) of the seventhlens, the thickness (L7 rt) of the flat portion of the rib of theseventh lens, the thickness (L7edgeT) of the edge of the seventh lens,the thickness (Yc71P1) of the seventh lens at the first inflection pointon the object-side surface of the seventh lens, the thickness (Yc7l P2)of the seventh lens at the second inflection point on the object-sidesurface of the seventh lens, and the thickness (Yc72P1) of the seventhlens at the first inflection point on the image-side surface of theseventh lens. Although not illustrated in FIG. 54, the seventh lens mayalso have a second inflection point on the image-side surface of theseventh lens, and a thickness of the seventh lens at this inflectionpoint is Yc72P2 as listed in Table 54.

The examples described above enable the optical imaging system to beminiaturized and aberrations to be easily corrected to achieve highresolution.

While this disclosure includes specific examples, it will be apparentafter an understanding of the disclosure of this application thatvarious changes in form and details may be made in these exampleswithout departing from the spirit and scope of the claims and theirequivalents. The examples described herein are to be considered in adescriptive sense only, and not for purposes of limitation. Descriptionsof features or aspects in each example are to be considered as beingapplicable to similar features or aspects in other examples. Suitableresults may be achieved if the described techniques are performed in adifferent order, and/or if components in a described system,architecture, device, or circuit are combined in a different manner,and/or replaced or supplemented by other components or theirequivalents. Therefore, the scope of the disclosure is defined not bythe detailed description, but by the claims and their equivalents, andall variations within the scope of the claims and their equivalents areto be construed as being included in the disclosure.

What is claimed is:
 1. An optical imaging system comprising: a firstlens having a positive refractive power; a second lens having a negativerefractive power; a third lens having a negative refractive power; afourth lens having a positive refractive power; a fifth lens having anegative refractive power; a sixth lens having a refractive power; and aseventh lens having a refractive power, wherein the first to seventhlenses are sequentially disposed in ascending numerical order along anoptical axis of the optical imaging system from an object side of theoptical imaging system toward an imaging plane of the optical imagingsystem.
 2. The optical imaging system of claim 1, wherein the first lenshas a convex object-side surface in a paraxial region thereof and aconcave image-side surface in a paraxial region thereof, and the secondlens has a convex object-side surface in a paraxial region thereof and aconcave image-side surface in a paraxial region thereof.
 3. The opticalimaging system of claim 2, wherein the optical imaging system satisfies0.01<R1/R4<1.3, where R1 is a radius of curvature on the optical axis ofthe object-side surface of the first lens, R4 is a radius of curvatureon the optical axis of the image-side surface of the second lens, and R1and R4 are expressed in a same unit of measurement.
 4. The opticalimaging system of claim 2, wherein the third lens has a convexobject-side surface in a paraxial region thereof and a concaveimage-side surface in a paraxial region thereof, and the optical imagingsystem satisfies 0.05<R1/R6<0.9, where R1 is a radius of curvature onthe optical axis of the object-side surface of the first lens, R6 is aradius of curvature on the optical axis of the image-side surface of thethird lens, and R1 and R6 are expressed in a same unit of measurement.5. The optical imaging system of claim 2, wherein the sixth lens has aconvex object-side surface in a paraxial region thereof, and the opticalimaging system satisfies 0.2<R1/R11<1.2, where R1 is a radius ofcurvature on the optical axis of the object-side surface of the firstlens, R11 is a radius of curvature on the optical axis of theobject-side surface of the sixth lens, and R1 and R11 are expressed in asame unit of measurement.
 6. The optical imaging system of claim 1,wherein the first lens has a convex object-side surface in a paraxialregion thereof, the sixth lens has a convex object-side surface in aparaxial region thereof, the seventh lens has a concave image-sidesurface in a paraxial region thereof, and the optical imaging systemsatisfies 0.6<(R11+R14)/(2*R1)<3.0, where R1 is a radius of curvature onthe optical axis of the object-side surface of the first lens, R11 is aradius of curvature on the optical axis of the object-side surface ofthe sixth lens, R14 is a radius of curvature on the optical axis of theimage-side surface of the seventh lens, and R1, R11, and R14 areexpressed in a same unit of measurement.
 7. The optical imaging systemof claim 6, wherein the third lens has a convex object-side surface in aparaxial region thereof and a concave image-side surface in a paraxialregion thereof, and the optical imaging system further satisfies0.1<(R11+R14)/(R5+R6)<1.0, where R5 is a radius of curvature on theoptical axis of the object-side surface of the third lens, R6 is aradius of curvature on the optical axis of the image-side surface of thethird lens, and R5, R6, R11, and R14 are expressed in a same unit ofmeasurement.
 8. The optical imaging system of claim 1, wherein theoptical imaging system satisfies0.1<(1/f1+1/f2+1/f3+1/f4+1/f5+1/f6+1/f7)*f<0.8, where f1 is a focallength of the first lens, f2 is a focal length of the second lens, f3 isa focal length of the third lens, f4 is a focal length of the fourthlens, f5 is a focal length of the fifth lens, f6 is a focal length ofthe sixth lens, f7 is a focal length of the seventh lens, f is anoverall focal length of the optical imaging system, and f1, f2, f3, f4,f5, f6, f7, and f are expressed in a same unit of measurement.
 9. Theoptical imaging system of claim 1, wherein the optical imaging systemsatisfies 0.1<(1/f1+1/f2+1/f3+1/f4+1/f5+1/f6+1/f7)*TTL<1.0, where f1 isa focal length of the first lens, f2 is a focal length of the secondlens, f3 is a focal length of the third lens, f4 is a focal length ofthe fourth lens, f5 is a focal length of the fifth lens, f6 is a focallength of the sixth lens, f7 is a focal length of the seventh lens, TTLis a distance along the optical axis from an object-side surface of thefirst lens to the imaging plane, and f1, f2, f3, f4, f5, f6, f7, and TTLare expressed in a same unit of measurement.
 10. The optical imagingsystem of claim 1, wherein the first lens has a convex object-sidesurface in a paraxial region thereof and a concave image-side surface ina paraxial region thereof, the sixth lens has a convex object-sidesurface in a paraxial region thereof, the seventh lens has a concaveimage-side surface in a paraxial region thereof, and the optical imagingsystem satisfies 0.2<TD1/D67<0.8, where TD1 is a thickness along theoptical axis of the first lens, D67 is a distance along the optical axisfrom the object-side surface of the sixth lens to the image-side surfaceof the seventh lens, and TD1 and D67 are expressed in a same unit ofmeasurement.
 11. The optical imaging system of claim 1, wherein theoptical imaging system satisfies 0.4<ΣTD/TTL<0.7, where ΣTD is a sum ofthicknesses along the optical axis of the first to seventh lenses, TTLis a distance along the optical axis from an object-side surface of thefirst lens to the imaging plane, and ΣTD and TTL are expressed in a sameunit of measurement.
 12. The optical imaging system of claim 1, whereinthe optical imaging system satisfies 0.6<TTL/(2*IMG HT)<0.9, where TTLis a distance along the optical axis from an object-side surface of thefirst lens to the imaging plane, IMG HT is an image height on theimaging plane and is equal to one half of a diagonal length of theimaging plane, and TTL and IMG HT are expressed in a same unit ofmeasurement.
 13. The optical imaging system of claim 1, wherein theoptical imaging system satisfies SD56<SD67, where SD56 is a distancealong the optical axis from an image-side surface of the fifth lens toan object-side surface of the sixth lens, SD67 is a distance along theoptical axis from an image-side surface of the sixth lens to anobject-side surface of the seventh lens, and SD56 and SD67 are expressedin a same unit of measurement.
 14. The optical imaging system of claim1, wherein the third lens has a convex object-side surface in a paraxialregion thereof and a concave image-side surface in a paraxial regionthereof, the fourth lens has a convex object-side surface in a paraxialregion thereof, and the seventh lens has a concave image-side surface ina paraxial region thereof.
 15. The optical imaging system of claim 14,wherein the fifth lens has a convex object-side surface in a paraxialregion thereof and a concave image-side surface in a paraxial regionthereof, and the sixth lens has a concave image-side surface in aparaxial region thereof.
 16. The optical imaging system of claim 1,wherein the seventh lens has a negative refractive power.
 17. Theoptical imaging system of claim 16, wherein the sixth lens has apositive refractive power.
 18. The optical imaging system of claim 17,wherein the first lens has a convex object-side surface in a paraxialregion thereof and a concave image-side surface in a paraxial regionthereof, the second lens has a convex object-side surface in a paraxialregion thereof and a concave image-side surface in a paraxial regionthereof, the third lens has a convex object-side surface in a paraxialregion thereof and a concave image-side surface in a paraxial regionthereof, the fourth lens has a convex object-side surface in a paraxialregion thereof, the sixth lens has a convex object-side surface in aparaxial region thereof, and the seventh lens has a concave object-sidesurface in a paraxial region thereof and a concave image-side surface ina paraxial region thereof.